UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

Commission file number: 1-4714

SKYLINE CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code:

(574) 294-6521

Securities registered pursuant to Section 12 (b) of the Act:

Securities registered pursuant to Section 12 (g) of the Act:

None

      Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     Yes o          No þ

      Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.     Yes o          No þ

      Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes þ          No o

      Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or an amendment to this Form 10-K.     o

      Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer o          Accelerated filer þ          Non-accelerated filer o

      Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).     Yes o          No þ

      The aggregate market value of the common stock held by non-affiliates of the registrant (6,818,262 shares) based on the closing price on the New York Stock Exchange on November 30, 2005 was $260,798,522.

      Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.

DOCUMENTS INCORPORATED BY REFERENCE

FORM 10-K

CROSS-REFERENCE INDEX

      Certain information required to be included in this Form 10-K is also included in the registrant’s Proxy Statement used in connection with its 2006 Annual Meeting of Shareholders to be held on September 22, 2006 (“2006 Proxy Statement”). The following cross-reference index shows the page locations in the 2006 Proxy Statement of that information which is incorporated by reference into this Form 10-K and the page location in this Form 10-K of that information not incorporated by reference. All other sections of the 2006 Proxy Statement are not required to be included in this Form 10-K and should not be considered a part hereof.

PART I

General Development of Business

      Skyline Corporation was originally incorporated in Indiana in 1959, as successor to a business founded in 1951. Skyline Corporation and its consolidated subsidiaries (the “Corporation”) design, produce and distribute manufactured housing (single section homes, multi-section homes and modular homes) and towable recreational vehicles (travel trailers, fifth wheels and park models).

      The Corporation, which is one of the largest producers of manufactured homes in the United States, produced 8,207 manufactured homes in fiscal year 2006.

      The Corporation’s manufactured homes are marketed under a number of trademarks. They are available in lengths ranging from 32’ to 76’ and in singlewide widths from 12’ to 18’, doublewide widths from 20’ to 32’, and triplewide widths from 36’ to 42’.

      The Corporation’s recreational vehicles are sold under a number of trademarks for travel trailers, fifth wheels and park models.

Financial Information about Segments

      Sales, operating results and total assets for the manufactured housing and recreational vehicle segments are included in Note 5, Industry Segment Information, in the Notes to Consolidated Financial Statements included in this document under Item 8.

Narrative Description of Business

      The Corporation designs, produces and distributes manufactured housing and towable recreational vehicles.

      The principal markets for manufactured homes are the suburban and rural areas of the continental United States. The principal buyers continue to be individuals over the age of fifty, but the market tends to broaden when conventional housing becomes more difficult to purchase and finance.

      The recreational vehicle market is made up of primarily vacationing families, retired couples traveling around the country and sports enthusiasts pursuing four-season hobbies.

      The Corporation provides the retail purchaser of its manufactured homes with a full fifteen-month warranty against defects in materials and workmanship. Recreational vehicles are covered by a two-year or less warranty. The warranties are backed by a corporate service department and an extensive field service system.

      The amount and percentage of sales contributed by the manufactured housing and recreational vehicle segments is noted in Item 7.

      The Corporation’s manufactured homes are distributed by approximately 480 independent dealers at 840 locations throughout the United States and recreational vehicles are distributed by approximately 260 independent dealers at 300 locations throughout the United States. These are generally not exclusive dealerships and it is believed that most dealers also sell products of other manufacturers.

      The Corporation’s products are sold to dealers either through floor plan financing with various financial institutions or on a cash basis. Payments to the Corporation are made either directly by the dealer or by financial institutions, which have agreed to finance dealer purchases of the Corporation’s products. In accordance with industry practice, certain financial institutions which finance dealer purchases require the Corporation to execute repurchase agreements in which the Corporation agrees, that in the event a dealer

defaults on its repayment of the financing, the Corporation will repurchase its products from the financing institution in accordance with a declining repurchase price schedule established by the Corporation. Any loss under these agreements is the difference between the repurchase cost and the resale value of the units repurchased. Further, the risk of loss is spread over numerous dealers. There has been no material losses related to repurchases in past years. Additional information regarding these repurchase agreements is included in Note 2, Commitments and Contingencies, in the Notes to Consolidated Financial Statements included in this document under Item 8.

      The Corporation is basically an assembler of components purchased from outside sources. The major components used by the Corporation are lumber, plywood, shingles, vinyl and wood siding, steel, aluminum, insulation, home appliances, furnaces, plumbing fixtures, hardware, floor coverings and furniture. The suppliers are many and range in size from large national companies to very small local companies. At the present time the Corporation is obtaining sufficient materials to fulfill its needs.

      The Corporation does not rely upon any terminable or nonrenewable rights such as patents, licenses or franchises under the trademarks or patents of others, in the conduct of any segment of its business.

      While the Corporation maintains production of manufactured homes and recreational vehicles throughout the year, seasonal fluctuations in sales do occur. Sales and production of manufactured homes are affected by winter weather conditions at the Corporation’s northern plants. Recreational vehicle sales are generally higher in the spring and summer months than in the fall and winter months.

      The Corporation does not build significant inventories of either finished goods or raw materials. In addition, there are no significant inventories sold on consignment.

      The Corporation does not rely upon any single dealer for a significant percentage of its business in any industry segment.

      The Corporation does not consider the existence and extent of backlog to be significant in its business. The Corporation’s production is based on a relatively short manufacturing cycle and dealers’ orders, which continuously fluctuate. As such, the existence of backlog is not significant at any given date and does not typically provide a reliable indication of the status of the Corporation’s business.

      The Corporation has had no significant government contracts during the past three years.

      The manufactured housing and recreational vehicle industries are highly competitive, with particular emphasis on price and features offered. The Corporation’s competitors are numerous, ranging from multi-billion dollar corporations to relatively small and specialized manufacturers.

      The manufactured housing industry shipped approximately 147,000 homes in calendar year 2005. In the same period, the Corporation shipped 7,955 homes for a 5.4 percent market share. In calendar year 2004,

approximately 131,000 homes were shipped by the industry. In that period, the Corporation shipped 7,559 homes for a 5.8 percent market share.

      The recreational vehicle industry shipped 419,500 units in calendar year 2005 compared to 412,100 units in calendar year 2004. The following table shows the Corporation’s competitive position in the recreational vehicle product lines it sells.

      Both the manufactured housing and recreational vehicle segments of the Corporation’s business are dependent upon the availability of financing to dealers and retail financing.

      Consequently, increases in interest rates and/or tightening of credit through governmental action or otherwise have adversely affected the Corporation’s business in the past and may do so in the future.

      The Corporation considers it impossible to predict the future occurrence, duration or severity of cost or availability problems in financing either manufactured homes or recreational vehicles. To the extent that they occur, such public concerns will affect sales of the Corporation’s products.

      The manufacture, distribution and sale of manufactured homes and recreational vehicles are subject to government regulations in both the United States and Canada, at federal, state or provincial and local levels.

      The Corporation believes that compliance with federal, state and local requirements respecting environmental quality will not require any material capital expenditures for plant or equipment modifications which would adversely affect earnings.

      The U.S. Department of Housing and Urban Development (HUD) has set national manufactured home construction and safety standards and implemented recall and other regulations since 1976. The National Mobile Home Construction and Safety Standards Act of 1974, as amended, under which such standards and regulations are promulgated, prohibits states from establishing or continuing in effect any manufactured home standard that is not identical to the federal standards as to any covered aspect of performance. Implementation of these standards and regulations involves inspection agency approval of manufactured home designs, plant and home inspection by states or other HUD-approved third parties, manufacturer certification that the standards are met, and possible recalls if they are not or if homes contain safety hazards.

      HUD has promulgated rules requiring producers of manufactured homes to utilize wood products certified by their suppliers to meet HUD’s established limits on formaldehyde emissions, and to place in each home written notice to prospective purchasers of possible adverse reaction from airborne formaldehyde in the homes. These rules are designated as preemptive of state regulation.

      Some components of manufactured homes may also be subject to Consumer Product Safety Commission standards and recall requirements. In addition, the Corporation has voluntarily subjected itself to third party inspection of all of its recreational vehicle products nationwide in order to further assure the Corporation, its dealers, and customers of compliance with established standards.

      Manufactured homes and recreational vehicles may be subject to the Magnuson-Moss Warranty — Federal Trade Commission Improvement Act, which regulates warranties on consumer products.

      The transportation and placement (in the case of manufactured homes) of the Corporation’s products are subject to state highway use regulations and local ordinances which control the size of units that may be transported, the roads to be used, speed limits, hours of travel, and allowable locations for manufactured homes and parks.

      The Corporation’s travel trailers continue to be subject to safety standards and recall and other regulations promulgated by the U.S. Department of Transportation under the National Traffic and Motor Vehicle Safety Act of 1966 and the Transportation Recall Enhancement, Accountability and Documentation (TREAD) Act, as well as state laws and regulations.

      The Corporation’s operations are subject to the Federal Occupational Safety and Health Act, and are routinely inspected thereunder.

      The Corporation is also subject to many state manufacturer licensing and bonding requirements, and to dealer day in court requirements in some states.

      The Corporation believes that it is currently in compliance with the above regulations.

      The Corporation employs approximately 2,800 people at the present time.

Available Information

      The Corporation makes available, free of charge, through the Investors section of its Internet website its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, Proxy Statements and all amendments to those reports as soon as practicable after such material is electronically filed or furnished to the United States Securities and Exchange Commission (SEC). The Corporation’s Internet site is http://www.skylinecorp.com. A copy of the Corporation’s annual report on Form 10-K will be provided without charge upon written request to Skyline Corporation, Investor Relations Department, Post Office Box 743, Elkhart, Indiana 46515.

      The public may read and copy any materials the Corporation has filed with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may also obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site (http://www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC.

      Investors or potential investors should carefully consider the risks described below. Additional risks of which the Corporation is presently unaware or that the Corporation considers immaterial may also impair business operations and hinder financial performance.

Retail Financing Availability

      Customers who purchase the Corporation’s manufactured homes generally obtain retail financing from third party lenders. The availability, terms and cost of retail financing depend on the lending practices of financial institutions, governmental policies and economic and other conditions, all of which are beyond the Corporation’s control. A customer seeking to purchase a manufactured home without land will generally pay a higher interest rate and have a shorter loan maturity versus a customer financing the purchase of land and a home. This difference is due to most states classifying home-only manufactured housing loans as personal property rather than real property for purposes of taxation and lien perfection.

      In recent years many lenders of home-only financing have tightened credit underwriting standards, with some deciding to exit the industry. These actions resulted in decreased availability of retail financing, causing a negative effect on sales and operating results. If retail financing were to be further curtailed, sales, operating results and cash flows could be adversely affected.

Wholesale Financing Availability

      Independent dealers of the Corporation’s products generally finance their inventory purchases with wholesale floor plan financing provided by lending institutions. A dealer’s ability to obtain financing is significantly affected by the number of lending institutions offering floor planning, and by an institution’s lending limits. In recent years the manufactured housing industry experienced a reduction in both the number of lenders offering floor planning, and the amount of money available for financing. These events could have a negative impact on a dealer’s ability to purchase manufactured housing products, resulting in lower sales, operating results and cash flows.

Dependence on Independent Dealers

      The Corporation sells its manufactured homes and recreational vehicles to independent dealers. These dealers are not obligated to exclusively sell the Corporation’s products, and may choose to sell competitor’s products. In addition, a dealer may become financially insolvent and be forced to close its business. Both scenarios could have an adverse effect on sales, operating results and cash flows.

Dealer Inventories

      As wholesale shipments of manufactured homes and recreational vehicles within each respective industry exceed retail sales, dealer inventories increase to a level where dealers decrease orders from manufacturers. As manufacturers respond to reduced demand, many either offer discounts to maintain production volumes or curtail production levels. Both outcomes could have a negative impact on sales, operating results and cash flows.

Contingent Repurchase Agreements

      As referenced in Note 2 to the Notes to the Consolidated Financial Statements in Item 8, the Corporation is contingently liable under repurchase agreements with certain financial institutions providing inventory financing for retailers of its products. The Corporation could be required to fulfill some or all of the repurchase agreements, resulting in increased expense and reduced cash flows.

Cost and Availability of Raw Materials

      Prices and availability of raw materials used to manufacture the Corporation’s products can change significantly due to fluctuations in supply and demand. The Corporation has historically been able to have an adequate supply of raw materials by maintaining good relations with its vendors. In addition, increased prices have historically been passed on to dealers by raising the price of manufactured homes and recreational vehicles. There is no certainty that the Corporation will be able to pass on future price increases and maintain adequate supply of raw materials. The inability to raise the price of its products and to maintain a proper supply of materials could have a negative impact on sales, operating results and cash flows.

Competition

      As noted in Item 1, the manufactured housing and recreational vehicle industries are highly competitive with particular emphasis on price and features offered. Some of the Corporation’s competitors are vertically integrated by owning retail, consumer finance and insurance operations. This integration may provide competitors with an advantage. In addition, the Corporation’s manufactured homes compete with other forms of housing, such as site-built homes, apartments, and condominiums. The inability to effectively compete in this environment could result in lower sales, operating results and cash flows.

Cyclical and Seasonal Nature of Business

      The industries in which the corporation operates are highly cyclical, and are impacted by the following conditions:

      Sales in both industries are also seasonal in nature with sales being weakest in the winter months. The cyclical nature and seasonal nature of the Corporation’s business causes sales, operating results and cash flows to fluctuate with the expectation of continued fluctuations in the future.

Increased Fuel Prices

      The Corporation’s recreational vehicle products depend on the use of vehicles that operate on gasoline or diesel fuel. In the Corporation’s history there have been periods where the price of gasoline and diesel fuel dramatically increased. These increases resulted in greater cost associated with recreational vehicle travel. These events could occur in the future, possibly causing decreased sales, operating results and cash flows.

Governmental Regulations

      As noted in Item 1, the Corporation is subject to various governmental regulations. Implementation of new regulations or amendments to existing regulations could significantly increase the cost of the Corporation’s products. In addition, failure to comply with present or future regulations could result in fines or potential civil or criminal liability. Both scenarios could negatively impact sales, operating results and cash flows.

Dependence on Executive Officers and Other Key Personnel

      The Corporation depends on the efforts of its executive officers and certain key employees. The loss of the service of one or more of these individuals could have an adverse effect on the sales, operating results and cash flows of the Corporation.

      None.

      The Corporation owns its corporate offices and design facility, which are located in Elkhart, Indiana.

      The Corporation’s 22 manufacturing facilities, all of which are owned, are as follows:

      The above facilities range in size from approximately 50,000 square feet to approximately 160,000 square feet. At May 31, 2006, the recreational vehicle facility in Leola, Pennsylvania was in the process of being converted to a manufactured housing facility.

      It is extremely difficult to determine the unit productive capacity of the Corporation because of the ever-changing product mix.

      The Corporation believes that its plant facilities, machinery and equipment are well maintained and are in good operating condition.

      Neither the Corporation nor any of its subsidiaries is a party to any pending legal proceedings which could have a material effect on operations.

      No matters were submitted to a vote of security holders during the fourth quarter of fiscal year ended May 31, 2006.

PART II

      Skyline Corporation (SKY) is traded on the New York Stock Exchange. A quarterly cash dividend of 18 cents ($0.18) per share was paid in fiscal 2006 and 2005. On November 1, 2004, a special dividend of one dollar ($1.00) per share was paid to shareholders of record of the Corporation’s common stock at the close of business October 14, 2004. At May 31, 2006, there were approximately 1,000 holders of record of Skyline Corporation common stock. A quarterly summary of the market price is listed for the fiscal years ended May 31, 2006 and 2005.

Dollars in thousands except per share data

Overview

      The Corporation sells manufactured housing and towable recreational vehicle products to independent dealers and manufactured housing communities located throughout the United States. To better serve the needs of its dealers, the Corporation has twenty-two manufacturing facilities in eleven states. Manufactured housing and recreational vehicles are sold to dealers either through floor plan financing with various financial

institutions or on a cash basis. While the Corporation maintains production of manufactured homes and recreational vehicles throughout the year, seasonal fluctuations in sales do occur. Sales and production of manufactured homes are affected by winter weather conditions at the Corporation’s northern plants. Recreational vehicle sales are generally higher in the spring and summer months than in the fall and winter months.

      Sales in both business segments are affected by the strength of the U.S. economy, interest rate levels, consumer confidence and the availability of wholesale and retail financing. The manufactured housing segment is currently affected by an industry recession. This recession, caused primarily by restrictive retail financing and economic uncertainty, has resulted in industry sales which over the last three years have been the lowest in decades. In the recreational vehicle segment, the Corporation sells towable units, including travel trailers, fifth wheels and park models. Industry sales of towable units have seen steady growth in recent years. Demand increased in both business segments in fiscal 2006 due to ongoing hurricane relief efforts in the Gulf coast region of the United States.

      Despite the recession in the manufactured housing industry, demand for multi-section homes is increasing. This product is often sold as part of a land-home package and is financed with a conventional mortgage. Multi-section homes have an appearance similar to site-built homes and are notably less expensive. Nine of the Corporation’s manufactured housing facilities have obtained approval from applicable state and local governmental entities to produce modular homes, which will help meet the demand for multi-section homes.

      The recreational vehicle segment in which the Corporation operates is a very competitive ever-changing market. This segment experienced increased demand in fiscal 2006 for travel trailers resulting from hurricane relief efforts. The Corporation contributed to relief efforts by providing recreational vehicles to its nationwide network of independent dealers.

Results of Operations — Fiscal 2006 Compared to Fiscal 2005

      Increased demand occurred for both single section and multi-section homes. In addition, sales rose due to an increase in the average selling price of multi-section homes.

      Recreational vehicle sales increased as a result of hurricane driven demand for towable travel trailers. The Corporation estimates that approximately 1,500 units related to hurricane relief were sold to independent dealers for approximately $15 million.

      Manufactured housing and recreational vehicle cost of sales increased due to increased sales. As a percentage of sales, cost of sales for both segments decreased as a result of the timing of the impact of increased selling prices during the year.

      Selling and administrative expenses rose primarily due to an increase in performance based compensation.

      Operating earnings for the manufactured housing segment increased due to improved sales, and improved margins on those sales. Operating earnings for the recreational vehicle segment increased due to improved margins and an increase in demand for towable travel trailers in the second, third and fourth quarters of 2006. General corporate expenses decreased primarily due to a change in the valuation of the Corporation’s liability for retirement and death benefits offered to certain employees. Additional information regarding the change in valuation is included in Note 4(B), Retirement and Death Benefit Plans, in Notes to Consolidated Financial Statements included in the document under Item 8.

      Interest income is directly related to the amount available for investment and the prevailing yields of U.S. Government Securities.

Gain on Sale of Idle Property, Plant and Equipment

      In the first quarter of fiscal year 2006, the Corporation sold vacant land for a pre-tax gain of $464,000.

Results of Operations — Fiscal 2005 Compared to Fiscal 2004

      Manufactured housing unit sales continue to be affected by difficult market conditions, restrictive retail financing and economic uncertainty. Average sales per unit rose due to increased selling prices and a product mix shift toward multi-section homes. Selling prices increased as a result of unprecedented increases in the cost of lumber, lumber-related materials and steel. Multi-section homes represent 81.6 percent of total unit sales for fiscal 2005 versus 80.2 percent for fiscal 2004.

      Recreational vehicle sales decreased as a result of a continued shift in consumer demand toward products with bonded wall construction. The Corporation currently offers a limited number of models with fiberglass exteriors.

      Manufactured housing cost of sales primarily increased due to increases in the costs of lumber, lumber-related materials and steel. In addition, this segment experienced rising costs associated with workers’ compensation and warranty.

      Recreational vehicle cost of sales decreased as a result of fewer units sold in fiscal 2005 versus 2004. As a percentage of sales, however, cost of sales increased resulting from higher material, warranty and workers’ compensation costs. This segment was further impacted by costs associated with an idled recreational vehicle facility.

      Expenses rose primarily due to increases in employee compensation and benefits. In addition, the Corporation incurred significant expenses related to compliance with the Sarbanes-Oxley Act of 2002.

      As noted above, increased costs of material, workers’ compensation and warranty negatively affected operating earnings for both segments. The recreational vehicle segment was further impacted by $816,000 in costs for a facility that was idled in the Corporation’s third quarter of fiscal 2005. General corporate expenses decreased primarily due to a one-time charge that occurred in fiscal 2004 which was related to a change in valuation of the Corporation’s liability for retirement and death benefits offered to certain employees. Additional information regarding the change in valuation is included in Note 4(B), Retirement and Death Benefit Plans, in the Notes to Consolidated Financial Statements included in this document under Item 8.

      Interest income is directly related to the amount available for investment and the prevailing yields of U.S. Government Securities.

      The Corporation’s policy is to invest its excess cash, which exceeds its operating needs, in U.S. Government Securities. Current assets, exclusive of cash and U.S. Treasury Bills and Notes, increased due to a rise in accounts receivables, $5,293,000, inventories, $1,470,000 and other current assets, $2,304,000. Accounts receivable increased due to a greater amount of sales in May 2006 versus May 2005. Inventories increased primarily due to an increase in raw material costs. Other current assets increased due to the timing of funding of workers’ compensation claims with the Corporation’s workers’ compensation insurance carrier.

      The rise in current liabilities is primarily due to a $2,870,000 increase in accrued salaries and wages which was driven by higher amounts of performance based compensation.

      Capital expenditures totaled $2,485,000 for the twelve months ended May 31, 2006 versus $2,356,000 in the comparable period of the previous year. Capital expenditures during this period were made primarily to replace or refurbish machinery, equipment and facilities in addition to improving manufacturing efficiencies. In addition, the Corporation received net proceeds totaling $1,493,000 from the sale of vacant land during fiscal 2006.

      On June 15, 2006, the Corporation declared a special cash dividend of two dollars ($2.00) per share on the outstanding shares of the Corporation’s common stock payable August 1, 2006, to shareholders of record at the close of business July 14, 2006. This special one time dividend was declared at the discretion of the Board of Directors, and is separate from and has no relationship to the regular quarterly dividends.

      The cash provided by operating activities, along with current cash and other short-term investments, is expected to be adequate to fund any capital expenditures and treasury stock purchases during the year. Historically, the Corporation’s financing needs have been met through funds generated internally.

Contractual Obligations and Commitments

      The following table summarizes the Corporation’s contractual obligation for operating lease agreements as of May 31, 2006 (dollars in thousands):

      The following table summarizes the Corporation’s commitments for repurchase agreements as of May 31, 2006 (dollars in thousands):

      Additional information regarding the nature of the repurchase agreements and the operating leases is in Note 2 to the Notes to the Consolidated Financial Statements. During fiscal years 2006 and 2005, the Corporation did not experience any losses on the sale of repurchased units.

Critical Accounting Policies

      The preparation of financial statements in conformity with generally accepted accounting principles requires the Corporation to make certain estimates that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. Estimates are periodically evaluated using historical experience and various other factors believed to be reasonable under the circumstances. Actual results could differ from these estimates under different assumptions or conditions. The following accounting policies are considered to require a significant estimate:

      As referenced in Note 1 of the Notes to Consolidated Financial Statements, manufactured homes are sold with a fifteen-month warranty and recreational vehicles are sold with a two-year or less warranty. Estimated warranty costs are accrued at the time of sale based upon sales, historical claims experience and management’s judgment regarding anticipated rates of warranty claims. Significant changes in these factors could have a material impact on future results of operations.

      The Corporation is insured for expenses associated with workers’ compensation. Costs are accrued based on management’s estimates of future medical claims developed by consulting actuaries at the carrier that insures the Corporation. Accruals are made up to a specified limit per individual injured and for an aggregate limit determined by the carrier.

      The Corporation utilizes a combination of insurance companies in offering health insurance coverage to its employees. Costs of claims incurred but not paid are accrued based on past claims experience and relevant trend factors provided by the insurance companies.

Newly Issued Accounting Standards

      The effect of newly issued accounting standards on the Corporation is addressed in Note 1 of the Notes to Consolidated Financial Statements.

Other Matters

      The provisions for federal income taxes in each year approximates the statutory rate and for state income taxes reflects current state rates effective for the period based upon activities within the taxable entities.

      The consolidated financial statements included in this report reflect transactions in the dollar values in which they were incurred and, therefore, do not attempt to measure the impact of inflation. The Corporation, however, experienced in fiscal 2005 significant increases in the cost of lumber, lumber-related materials and steel. Although the Corporation was unable to recover all of the increases in the first half of fiscal 2005, on a long-term basis it has demonstrated an ability to adjust selling prices in reaction to changing costs due to inflation. The Corporation believes inflation has not had a material effect on its operations during fiscal 2006.

      As addressed in Items 1 and 3, the Corporation has not had nor anticipates to have material expenditures related to environmental quality or product liability.

Forward Looking Information

      Certain statements in this report are considered forward looking as indicated by the Private Securities Litigation Reform Act of 1995. These statements involve uncertainties that may cause actual results to materially differ from expectations as of the report date. These uncertainties include but are not limited to:

      The Corporation invests in United States Government Securities. These securities are typically held until maturity and are therefore classified as held-to-maturity and carried at amortized cost. Changes in interest rates do not have a significant effect on the fair value of these investments.

Index to Consolidated Financial Statements

      All other schedules are omitted because they are not applicable or the required information is shown in the financial statements or notes thereto.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of Skyline Corporation:

      We have audited the accompanying consolidated balance sheet of Skyline Corporation and subsidiary companies (the “Corporation”) as of May 31, 2006, and the related consolidated statements of earnings and retained earnings, and cash flows for the year then ended. We also have audited management’s assessment, included in the accompanying Management’s Report on Internal Control over Financial Reporting, that the Corporation maintained effective internal control over financial reporting as of May 31, 2006, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Corporation’s management is responsible for these financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting. Our responsibility is to express an opinion on these financial statements, an opinion on management’s assessment, and an opinion on the effectiveness of the Corporation’s internal control over financial reporting based on our audits.

      We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audit of financial statements included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, evaluating management’s assessment, testing and evaluating the design and operating effectiveness of internal control, and performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

      A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

      Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

      In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of the Corporation as of May 31, 2006, and the results of its operations and its cash flows for the year then ended in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, management’s assessment that the Corporation maintained effective internal control over financial reporting as of May 31, 2006, is fairly stated, in all material respects, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Furthermore, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of May 31, 2006, based on criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

South Bend, Indiana

July 24, 2006

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of Skyline Corporation:

      In our opinion, the consolidated balance sheet as of May 31, 2005 and the related consolidated statements of earnings and retained earnings and of cash flows for each of two years in the period ended May 31, 2005 (appearing on pages 20 through 22 of the Skyline Corporation’s 2006 Annual Report to Shareholders which has been incorporated by reference in this Form 10-K) present fairly, in all material respects, the financial position of Skyline Corporation and its subsidiaries at May 31, 2005, and the results of their operations and their cash flows for each of the two years in the period ended May 31, 2005, in conformity with accounting principles generally accepted in the United States of America. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

PricewaterhouseCoopers LLP

Chicago, Illinois

July 28, 2005

Skyline Corporation and Subsidiary Companies

Consolidated Balance Sheets

May 31, 2006 and 2005

The accompanying notes are an integral part of these consolidated financial statements.

Skyline Corporation and Subsidiary Companies

Consolidated Statements of Earnings and Retained Earnings

For the Years Ended May 31, 2006, 2005 and 2004

The accompanying notes are an integral part of these consolidated financial statements.

Skyline Corporation and Subsidiary Companies

Consolidated Statements of Cash Flows

For the Years Ended May 31, 2006, 2005 and 2004

Increase (Decrease) in Cash

The accompanying notes are an integral part of these consolidated financial statements.

Skyline Corporation and Subsidiary Companies

Notes to Consolidated Financial Statements

      Nature of operations — Skyline Corporation designs, manufactures and sells at wholesale both a broad line of manufactured housing (single section homes, multi-section homes and modular homes) and a large selection of towable recreational vehicle models. Both product lines are sold through numerous independent dealers throughout the United States who often utilize floor plan financing arrangements with lending institutions.

      The following is a summary of the accounting policies that have a significant effect on the consolidated financial statements.

      Basis of presentation — The consolidated financial statements include the accounts of Skyline Corporation and all of its subsidiaries (the “Corporation”), each of which is wholly-owned. All intercompany transactions have been eliminated. The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

      Revenue recognition — Substantially all of the Corporation’s products are made to order. Revenue is recognized upon completion of the following: an order for a unit is received from a dealer; written or verbal approval for payment is received from a dealer’s financing institution or payment is received from the dealer; a common carrier signs documentation accepting responsibility for the unit as agent for the dealer; and the unit is removed from the Corporation’s premises for delivery to a dealer.

      Freight billed to customers is considered sales revenue, and the related freight costs are cost of sales. Volume based rebates paid to dealers are classified as a reduction of sales revenue. Sales of parts are classified as revenue.

      Consolidated statements of cash flows — For purposes of the statements of cash flows, investments in U.S. Treasury Bills and Notes are included as investing activities. The Corporation’s cash flows from operating activities were reduced by income taxes paid of $8,973,000, $3,121,000 and $5,884,000 in 2006, 2005 and 2004, respectively.

      Investments — The Corporation invests in United States Government Securities. These securities are typically held until maturity and are therefore classified as held-to-maturity and carried at amortized cost.

      The cost and accrued interest of U.S. Treasury Bills, which approximates fair market value, totaled $52,607,000 and $92,465,000 at May 31, 2006 and 2005, respectively. The gross amortized cost of U.S. Treasury Notes, which approximates fair market value, totaled $89,567,000 and $44,529,000 at May 31, 2006 and 2005, respectively. The fair market value of both investments is determined by a secondary market for U.S. Treasury Securities. The Corporation does not have any other financial instruments which have market values differing from recorded values.

      Accounts receivable — Trade receivables are based on the amounts billed to customers. The Corporation does not accrue interest on any of its trade receivables.

      Inventories — Inventories are stated at cost, determined under the first-in, first-out method, which is not in excess of market. Physical inventory counts are taken at the end of each reporting quarter.

Skyline Corporation and Subsidiary Companies

Notes to Consolidated Financial Statements — (Continued)

      Total inventories consist of the following (dollars in thousands):

      Property, plant and equipment — Property, plant and equipment is stated at cost. Depreciation is computed over the estimated useful lives of the assets using the straight-line method for financial statement reporting and accelerated methods for income tax purposes. Estimated useful lives for significant classes of property, plant and equipment are as follows: Building and improvements 10 to 30 years; machinery and equipment 5 to 8 years.

      Warranty — The Corporation provides the retail purchaser of its manufactured homes with a fifteen-month warranty against defects in design, materials and workmanship. Recreational vehicles are covered by a two-year or less warranty. The warranties are backed by a corporate service department and an extensive field service system. Estimated warranty costs are accrued at the time of sale based upon current sales, historical experience and management’s judgment regarding anticipated rates of warranty claims. The adequacy of the recorded warranty liability is periodically assessed and the amount is adjusted as necessary.

      A reconciliation of accrued warranty and related expenses is as follows (dollars in thousands):

      Other deferred liabilities — Other deferred liabilities consist of the following (dollars in thousands):

Skyline Corporation and Subsidiary Companies

Notes to Consolidated Financial Statements — (Continued)

      Income taxes — The federal and state income tax provision (benefit) is summarized as follows (dollars in thousands):

      The difference between the Corporation’s statutory federal income tax rate and the effective income tax rate is due primarily to state income taxes as follows (dollars in thousands):

      The components of the net deferred tax assets are as follows: