It all depends on where you want to end up. I know that doesn't answer much.. But there's lots to consider.

Do you "need" the extra money? Are you paying for school yourself?
If not, then I would do the schooling. Do you work a part-time job during the school year?

Working for a few extra bucks an hour for 2 and a half months isn't going to get you very far.

There's no rush to finish school, but there's a lot of opportunities you could be missing while you're spending the extra time in school from taking the job.

Are you going to invest the money? Or ration it throughout your school year? Or just buy stuff that's not going to matter a year from now?

Try and look at the bigger picture.

Let us know what you deicde, and best of luck!