What kind of school do you go to? Is it a university? Because if you're at community college, then you sound like you're in a funk and you need a change.
If you're close to finishing, then grind it out and get that degree.
If you're not even close to finishing and you feel lost and like you're not going anywhere, you need to shake things up.
Go ahead and enlist, and work hard and take advantage like people here said. Hopefully you don't get assigned to infantry or something dangerous like that.
Hopefully you'll learn some discipline, gain some direction, see exotic locations, and come out with your school paid for and a new outlook on life.
Good luck.