Fortiguard??
 

School has Fortiguard, Synchroneyes, Group policy that blocks everything, cannot edit the Registry, all the loop holes are fixed and it's the first year they have computers. I am very experienced in "hacking" if you will, and this is a big stump for me. Does anyone have any suggestions of how one might bypass these for out of school use? Cannot use cmd prmpt to edit anything, access is denied or unknown command.

Have you tried booting off a USB stick or LiveCD? Something like the Stealth Surfer that we recently reviewed might be an easy solution, if they haven't locked down the hardware, or you can try to follow some how-to guides to get something like Knoppix to boot off a USB thumbdrive. Knoppix (et al) also obviously have LiveCD ISOs that you could burn and try to boot from...

For that matter, does GPO prevent inserting a usb drive in Windows, and/or executing software from the drive? You can get browser variants built to run self-contained on a thumbdrive, possibly in conjunction with something like TOR, if that's possible.