Covering the business of education and training

Chinese students are voting on the 10 Worst Habits on campus.

So far

1. Interrupting others' rest in the dormitory is ahead - 30%

2. Spitting on the ground - 15%

3. Making out in public - 13%

Other bad habits -

Taking a seat but not using

Not turning off mobile phones during class.

Bad habits that were NOT considered extremely hateful because they didn't directly affect each other -

Showing up late for class.

Walking on the grass

Cheating on exams.

So, I wonder, what are the worst habits on American campuses?