For some more ideas of data to list, I'd suggest looking at the college profiles at collegeboard and seeing what data you could easily include that would be helpful - example: https://bigfuture.collegeboard.org/coll ... university
One thing that would probably be hard to get but would be super-useful would be if you could have a column for current or recent students who provide contact information to give personal feedback. When I was picking a college to go to, finding a current student to talk to (that wasn't paid for or approved by their admissions department) was invaluable in getting a feel for what life would really be like going to that college. So, if, for example, members of this forum could say "You can list me as a contact for XYZ University, my email address is ____ " and then you put that up with the university name, then a future student could talk to them and get a more full picture.
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Success is getting what you want; happiness is wanting what you get.