Set up a vpn for school
This post is deleted!
So to clarify your asking how to circumvent your schools policy and sneek a vpn connection through?
While there are many ways to do that.. You really should check with your schools policy on such activity - if you have a legit reason to use a vpn from your schools network then they should give details on how to do that.
While you might find some people here willing to help you circumvent.. Many here will not be willing to offer such help.. Good luck.