Students that play a reed instrument (clarinet, saxophone, oboe, Bassoon) should always have AT LEAST 2 good reeds with them.  

While you can purchase individal reeds from the band room, it is better to purchase a box of reeds so the student is always prepared.   You can order online from a retailer like Amazon, order from Marshall Music online for school delivery, or you can check with local music stores like Grand Blanc Music or Wind Works.