Good news finally then. Those "little hiccups" aren't fun. My wife retired last June. Her company messed up the COBRA transfer for us and that was fun with specialty medicines, two Dr. appointments, an MRI and a referral for rotator cuff surgery. Like they could smell it coming. Then again, it might just be me. My Cars always seemed to know when I'd get some Overtime or a bonus.
Schools probably don't want you on the land because someone will sue them for it. The "It's too noisy" "It smells" "It's to dangerous" thing and everyone looking for a payday. I'm sure the school system knows they'll be part of a big lawsuit if an incident occurred and they found out you had their permission.