Since she obviously has nothing but time on her hands with the fact she can’t really go many places since everyone wants to kill her and she’s stuck in Florida for probation…the decision to go back to school seems like a no-brainer! Find out where Casey will attend after the jump.

Marisa Mendez

TMZ has learned, she’s going back to college … on the Internet.

Sources close to Casey tell TMZ, she hasn’t decided what field to pursue just yet — but she’s adamant about bettering herself while confined to the Sunshine State … and wants to start taking online courses ASAP.

We’re told Casey will hit the books from the comfort of her own home — which is doubly convenient … because after numerous death threats, she doesn’t plan to spend much time outside.

And to make sure she stays safe — we’re told Casey has the entire place on lockdown …with a 24-hour security team.