[jimbo99912]

ABET accreditation isn't really very important in Computer Science, tons of good schools forego it or offer a separate Software Engineering degree that has ABET accreditation.

CS isn't like Electrical Engineering where a university is either ABET accredited or a diploma mill. ABET imposes a lot of controversial requirements on CS programs that many top programs don't agree with. It's a young field and the curriculum hasn't been set in stone to the same extent it has in the rest of the engineering school.

That being said, the school itself being properly accredited is still important, and obviously going to a highly regarded CS program is an advantage (although it doesn't need to be ABET, for instance last I checked Stanford CS is not ABET accredited), although it's not the end of the world if you can't.

Edit: I just noticed you said ABET accredited university and realized I may have misinterpreted what you meant. I would agree that the university having an ABET accreditation in it's Engineering programs in general is important, i.e. it's a bad sign if the school you are going to for CS has a non ABET accredited E.E. program (although those are few and far between due to it being essentially mandatory and much less controversial in more traditional engineering programs).