Is a campus interview still as formal as an office interview?

Are you a student? Just wear a suit. You can't go wrong.

Wear a suit, but purposely leave your zipper down. It will counteract the formality and leave a nice balance.

Don't think that's a good idea. I'm trying to land this job

A suit? Man..I'll wear some nice slacks, a nice button down shirt, a tie and some nice shoes

The general rule I was always told was that it was better to overdress than underdress. I always wore a suit during my campus interviews, even with companies like Microsoft which has as relaxed of a dress code as possible.

Good luck!
Also, most interviewers like it when you ask a question at the end. So when they say "do you have any questions" be sure to ask something. It shows interest.

ETA: suit seems to be the general consensus. Go with a suit.

It's kind of goofy I agree. I probably wouldn't show up to my employer in a suit at their office. But it was definitely the common thing to wear a suit at the campus interviews. You'd be in the minority not wearing one. At least 7 years ago.

Suit up. I already had one, but bought two more my jr year in school so I could swap them out for multiple interviews. I always wore one to interviews, either on campus or at an office, but I didn't want to be that guy who ends up doing a 2nd or 3rd interview, talking with the same people, and wearing the same suit to all of them. That can be more telling than not wearing one to a campus interview.

As a guy who often sits on the other end of the table, wear a suit man...

I have always believed that expecting college kids and recent grads to wear a suit isn't fair to the less fortunate, first generation college student types.