Comment by btilly

My guess is that the survey was bought from a private company on a contract that says it is that company's property and not to be shared. Therefore if the school released the form, they could be sued by said private company both for violating copyright and contract. (And the company would want that because they want to resell the survey to other schools.)

Stupid, yes. But I think it is likely that the school has a real legal barrier to sharing the survey.