The High School Mac Mart is a room that can be used as a concession stand for events held in the cafeteria or the gymnasiums. Seating Capacity -  Address - 314 Elm Street Ext., Canonsburg, PA  15317 Rental Rates: Rent - TBD Custodial - $ 41.53/hr Maintenance - $ 48.76/hr Security - $ 15.75/hr Parkers - $ 24.00/hr