Or not even a law school but a legal aide to help students.

My junior year in college 7 of us rented a house. Landlord kept the entire security deposit (which amounted to about $2000) for a bunch of bogus reasons and lies. The university had people to help students and for no cost to us we had an attorney that helped us. Took many months (several of us had graduated by then) but we ended up in arbitration over it and we got all our money back and some penalties! And it didn't cost us anything for the lawyer.

It was a long time ago that I was in college, so I can't really say how we went about it all, but it's an option to look into.