I read an article where they did a supply/demand analysis of tuitions, and found that tuitions might simply be responding to demand. Obviously, there are a lot of factors to consider. But they looked at broader economics for demand (jobs, unemployment) and existing college sizes (instructor and class volume) and found that pricing were correlated with supply/demand changes, with loans playing only a minor role in education costs. It wasn't definitive, but now I view the "loans raise tuitions" crowd as holding an overly simplistic ideological position.