Giving students several days of class time to complete a large assignment and they play on their Chromebooks or talk. I can take Chromebooks away, move them away from other students and they still don’t work.
Warning students that in class work not turned in will be a zero then hearing complaints about how they’re in trouble with their sports team because they have a D or an F in my class. Students asking for extra credit when they don’t do the regular classwork.
Parents asking me what a child is missing in class rather than checking the online gradebook when that is where the got the grade in the first place.