Umm, What the heck Popeyes?

Soo I went to Popeyes's at 395 Central Parkway today and saw this on the door at Popeyes. I have so many questions, but I'd say my biggest one is: Is this even legal/enforceable? Seems rather discrimitory and idk how Popeyes intends to issue trespassing notices on paying customers simply because they are a student... Even if it's one of those signs that is simply to discourage rowdy students, idk if putting a sign on your door saying no students allowed and threatening them with trespassing charges is the best look for your business. What's y'alls take on this??

Soo I went to Popeyes's at 395 Central Parkway today and saw this on the door at Popeyes. I have so many questions, but I'd say my biggest one is: Is this even legal/enforceable? Seems rather discrimitory and idk how Popeyes intends to issue trespassing notices on paying customers simply because they are a student... Even if it's one of those signs that is simply to discourage rowdy students, idk if putting a sign on your door saying no students allowed and threatening them with trespassing charges is the best look for your business. What's y'alls take on this??