Academics:

Does the university have the major(s) you're considering?
What is the average class size (student/professor ratio)?
What kind of academic resources does the university offer to its students?
Are there any tutoring services offered?
How will the university help advance my career?

Campus Life:

What are the housing options the university offers?
What dining options does the university offer?
What is the student body like? Is it diverse?
Do you feel like you could connect with the student body?
What safety precautions does the university take?
Do I need to bring a car to campus?
Are student jobs available on campus?

Extracurriculars:

Does the university have involvement opportunities?
How many organizations/clubs does the university have?
Are students able to start their own club on campus?
Are there any fun activities off campus?
What campus events does the university put on?

Questions to ask current college students to gain insight:

How would you rate your overall experience at this university?
Why did you choose to come here?
How would you rate the professors you have had?
What is your favorite thing about the university?
What do you enjoy least the about the university?
How would you describe the community?