You might try groups on Facebook, but do be careful- if you're "re-homing" him, that means you're not getting him back. And some on FB call themselves "rescues" but what they're doing is accepting unwanted pets & then selling them to anyone for profit. I don't recommend doing that...
I'd ask around at vet's offices to see about boarding or rehoming him- some also have bulletin boards or know people that would be interested- & some are on staff.How long do you plan to be on campus & unable to have him with you? There's a limit as to what is a reasonable length of time for someone to "babysit" a snake. And realize that many things can happen while doing that.
You can, of course, "list" him here too: https://ball-pythons.net/forums/foru...tion-or-Wanted
Hindsight being 20:20, you probably got this pet at the wrong time in your life, sorry to say.