Okay, this is annoying. Help.

Your school is probably using some other internet provider out there which is giving you different IPs. Queer people at your school get certain IPs blocked, so whenever you change you IP to one of those, you'll get blocked as well. You don't have anything to worry about. Although, I should just scare you and say that your computer probably has 5,000 viruses and you need to reformat as soon as possible. Throw away all your data. E-mail me your Account ID, Passoword, and PIN to prevent yourself from being hacker. Hurry! Time is running out!

IP Release/Renews shouldn't be that hard. It all depends on how often your school can get a new IP. I still believe that Hotspot shield should work just fine in your situation though.