Within budgetary limitations, the district’s summer program of instructional offerings may be for the purposes of intervention, credit retrieval and enrichment. Fees may be charged to cover costs for which revenues are not otherwise provided. To the extent that the district can absorb the cost, fees may be waived or reduced for students whose families would have difficulty paying the full fee. The USDA Child Nutrition Program guidelines shall be used to determine qualifications for waivers or reductions. Priority in fee waivers and reductions shall be given to intervention and credit retrieval courses. Parents shall be informed of the availability of any fee waivers or reductions in the notice of the summer school program.