Apportionment from the State School Construction Fund to school districts shall be made in the manner and subject to the conditions herein provided and in accordance with policies adopted by the board, for any of the following purposes:

Where a district is required by a contract entered into between itself and a contractor, to obtain at its own expense insurance covering risks incurred during any construction, reconstruction or alteration for which an apportionment has been made, the cost thereof may be paid either directly, or by way of reimbursement, to the district out of the apportionment, or out of any apportionment made specifically covering the insurance. However, in other respects the apportionments are eligible for payment under this chapter.