In this Great Entitlement Era, I suspect you get an automatic GPA of 3.5 for just showing up.
That, and the disrupters were probably majors in made-up courses (e.g., Ethnic Feminist Oppression in the Bronze Age)
If students received the grade they earned there would be all new teachers.
I can remember thirty years ago where a teacher was sued for giving students the grade they deserved, the school with the Unions help, forced that teacher to change the grades.
Here is a problem almost no one thinks about. If you failed all the students that did not actually perform at grade level, where would you put them next year? Whether you pass those students or not, there will still be a new class coming in the next year.