It really depends on where you are, but, yeah, part-time IT is a thing. In my area, it seems like some of those jobs are posted by people who really need full time IT but who don't want to or can't pay for it - but it still seems like it would be better than the job you know you can't stand.

Marketing companies in my area are always hiring junior web developers. Is there anyway you could get a paid internship through your school?