A county board shall treat the permanent improvement fund as a separate fund in the annual budget for county school purposes. Expenditures shall be made from the fund only in accordance with an appropriation made pursuant to the annual budget, or made otherwise in accordance with this article. If the board of finance finds, in its examination of the budget of a county school district, that a county board has accumulated, or with proposed additions to the fund in the fiscal year will accumulate, the fund of the county to an amount in excess of twenty-five percent of the amount of the foundation school program of the county for the same fiscal year, the board of finance shall order that no moneys in excess of the limitation be appropriated for or paid into the fund. If the board of finance finds that the assets of the fund of a county exceed twenty-five percent of the amount of the foundation school program for the county for the same year, the board may require that building and permanent improvement projects included in the annual budget, be paid for out of the fund.
The board of finance shall administer this section so as to keep the accumulated assets of the fund, as near as may be, within the limitation of twenty-five percent of the amount of the foundation school program.