Starting with Season 2, there were school references.
This was mentioned in Poem In Your Pocket Day. This is for when someone is late. Lubch told Err in that episode "Late Pass". One reason for that was because she was late.
This was mentioned in Quarterly Exam. The students were threatened to get a 1000 page essay if they kept cheering.
This pass lets you leave the classroom for a certain thing. Mostly for water or bathroom. This hasn't been mentioned or seen yet.
A period where a teacher prepares for the next class. This hasn't been mentioned or seen yet.
This was mentioned several times. This was first mentioned in Notebook Check, where everybody got at least zero points or below. In Triple Point Day, Lubch gave Dool three zeros for writing on his board.
This was shown several times in Season 3. In Silent Reading Inspection Day, Err and Mape got lunch detention, as Lubch shot Err's phone for using it, and Mape had to be clubbed for laughing and then lying about it. It also occurred in Purple Day. This was replaced with Detention starting from Season 5.
PM School was mentioned in Evacuation Drill when Extop threatened to give her students that if they didn't do their work.
Binders were the main subject in Binder Check. Lubch only liked a few of them.
Summer Reading was the main subject in Summer Reading Pt. 1.
Points were mentioned numerous times in Season 2 and Season 3, like in Notebook Check and Binder Check. However, a different type of points system began in Season 6. In PupilPath, Stoico threatened that he'd give everyone at least -50 points if they got even a single question wrong.
PupilPath is a gradebook that was the main subject in PupilPath. In that episode, it took over Jupiter Ed, another gradebook with less features. Stoico decided to torment the kids so much that he gave them a quiz about PupilPath, even though all but one of them didn't know much about it at the time. He even threatened that he'd give them -50 points each if they even answered one question incorrectly.
Jupiter Ed is a gradebook that was used in Season 5 and part of Season 6 until February 2015, when PupilPath replaced it. It still exists today, but it's no longer used for the series nor Curtis High School.
Haven't been seen or mentioned yet.
Hasn't been seen or mentioned yet.