looking 4 help with school system, BESS filter

first of all hi , im new to techware and i need a little help.
Me and a few friends are looking into hacking and other computer related transactions and this site is a major boost 4 us.
We live in a small town and our school is somewhat different from the surrounding ones, the school is almost completely electronically run including sum doors, locks, cameras and of course the systems.
We want to get into our filters first, we are starting easy, we dont plan anything big, just a test to see how we'll do, also we all want access 2 our favorites games.
We use Bess so im wondering how many ways there is to get around it with not a great supply of cracking knowledge.
If you know how this stuff ticks we could use your help.
(sorry for the long message)

oh yea heres a something that might give you somme help, its our site lol
www.carteretcountyschools.org/nms.com