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. Must be backup plan to cover expenses if gate is low. Season or annual all-sport tickets provide money up front and are more consistent.