Regular reimbursement shall be determined by multiplying the approved reimbursable costs of approved reimbursable pupil transportation expended during the preceding year times the applicable aid ratio of the school district. In determining approved reimbursable costs, maximum allowable costs are subject to a prorated reduction on the basis of cost per utilized passenger capacity mile for those pupils for whom transportation reimbursement is not authorized by law. In addition, depreciation payments are made to qualifying school districts.
22 Pa. Code § 23.33