It was expected of German students to train in fencing, facial scars from their endless duels were worn with pride. Even today you can still see some (very) old German academics with those distinct scars.

Until ~1790 they were allowed to carry their swords at all time, after that only when traveling. Which was the original purpose of them training with swords, after all. That law change might be related to the French stabbing their nobles at that time.

Sadly, I am in my home town over the holidays and have trouble finding a nice source, especially an English one.

But student fraternities (quite distinct from US fraternity traditions) were one of the more vocal sword-carrying groups in Central Europe, at first because they needed the protection when traveling, and afterwards because they were young men who felt they had to prove themselves constantly. If you are looking for sword-related laws, their history might be a good place to start.