We need more info what you mean, do you mean that you cant connect to your schools wifi or your phone's hotspot app is being blocked, if it is the hotspot from your phone I am not 100% sure but I believe its a FCC violation and can actually be cause for major fines in the high thousands to low tens of thousands of dollars.
As for the school wifi, best idea is to just not use the school wifi as they are strictly monitored and depending on if you use a alternate app for texting (one that sends texts or calls over the internet) they can monitor anything you send through the server.
Rocking out on: VZ Note 3 Rooted, Safe Strap, NC2
Tablet: Nexus 7 (2013) Unlocked, collecting dust
Apple: iPod touch 5th gen iOS 7.1, gave up on that thing, not worth my time when i have a note
Computer: Late 2013 MBPr, 2.6 ghz i7, Nvidia GTX 750m 1TB SSD, 16GB Ram With dual boot for windows 8.1 pro