1. Salaries and wages, which may include expenses for salaries, wages, per diem allowances and other forms of compensation;

2. Employee benefits paid to any member or employee of the board for services rendered or for employment. Employee benefits may include employer contributions to a retirement system, insurance, vacation allowances, sick leave, terminal pay or similar benefits;

3. Operating expenses, which may include materials and supplies, articles and commodities which are consumed or materially altered when used, such as office supplies, operating supplies and repair and maintenance supplies, and all items of expense to any persons, firm or corporation rendering a service in connection with repair, sale or trade of such articles or commodities, such as services or charges for communications, transportation, advertising, printing or binding, insurance, public utility services, repairs and maintenance, rentals, miscellaneous items and all items of operating expense to any person, firm or corporation rendering such services;

4. Other services and charges, which may include all current expenses other than those listed in paragraphs 1, 2, 3, 5 or 6 of this section;

5. Capital outlays, which may include outlays which result in acquisition of or additions to fixed assets purchased by the district, including land, buildings, improvements other than buildings, and all construction, reconstruction, appurtenances or improvements to real property accomplished according to the conditions of a contract, machinery and equipment, furniture and autos and trucks; and

6. Debt service, which may include outlays in the form of debt principal payments, periodic interest payments, paying agent's fees, or related service charges for benefits received in part in prior fiscal periods as well as in current and future fiscal periods.