Scale it back for the same market...
I definitely think going forward with a brick and mortar establishment is doomed to fail. What I suggest is this...
Scenario:
You obviously know that B&N is a draw for current students and you also know that students desire to congregate, what if there was a B&Nesque venue where students did not have to leave campus to partake. Most school administration is all for safety,safety. I think you concept would do very well if you were to co-locate your shop/lounge inside the school. For example, there is an empty but sizeable storage or class room, bring the school admin on board, create a contest for the best theme for the shop/lounge, create raging fans, share revenue with the school either by funding or sponsoring Pep Rallies or similar.
This is of course is oversimplified but definitely doable. If you want to take the back door approach as well and have school officials start something similar to YE but maybe call it "Aspiring Students Who Want To Become Entrepreneurs" or ASW2TB or whatever floats your boat. Get the new organization to sponsor the shop/lounge concept.
Hope this helps.
Yahya
Yahya E. Henry
REALTORŪ
Keller Williams Realty