Must be either volunteer or on full-time faculty. Usually new facilities are charged to capital improvements or money comes from bond or donors. Upkeep of facilities is usually taken care of by school staff. Sometimes athletics budget is charged for events. In many small schools athletics must arrange for own clean-up and maintenance.
Many schools charge athletics for use of school vehicles.
Some must contract with outside sources. Some school districts subsidize the cost. Can be very expensive. Gate receipts Source is not always dependable. Some school's athletic programs depend heavily on gate income.