State law specifically allows for fees for participation.
Kansas Statutes 72-3353. Fees; supplemental charges authorized to be prescribed and collected; disposition of moneys.
(a) The board of education of any school district may prescribe, assess and collect fees and supplemental charges for:
- (1) The use, rental or purchase by pupils of any of the items designated in K.S.A. 72-3352, and amendments thereto, to offset, in part or in total, the expense of purchasing such items; and
- (2) participation in activities, or the use of facilities, materials and equipment, which participation or use is not mandatory, but optional to pupils, whether incidental to curricular, extracurricular or other school-related activities.