Getting drunk in front of the students to the extent that you actually walk on all fours like an animal is not a crime but is definitely not what a university teacher should be doing as a purported rôle model. Three of the teachers there do that regularly and another one occcasionally, as has been witnessed by many of us there.

Having sex WITH ONE'S OWN STUDENTS AND LIKELY BLACKMAILING THEM TO HAVE SEX WITH YOU IN ORDER TO GIVE THEM A BETTER GRADE is a crime in all jurisdictions. And that was what people said was happenning with four male teachers there (ex-students of two of those are no longer their students, just their concubines, whom each of them introduces to others as their "girlfriend", but they were their own students at the time the liaison was initiated; the other two teachers -- according to the story running around town -- are still in such arrangements with their students and that influences the students' grades).

So, yes, at least a part of it IS INDEED a criminal activity.