Though I don't have any school district experience, both of the camps that I worked at long-term (I don't know for the one that I just spent a summer at) we had epi-pens, as well as syringes and vials of epinephrine on hand, prescribed by the doctor that oversees our camp medical orders. You never know when someone might have a first allergic reaction, especially to stinging insects, and we weren't necessarily close to medical attention. (Though to give EMS credit, they did make it to camp in 10-15 minutes when we called because of my heart trouble, which is a REALLY quick trip from where they are located.)