Angry Mom (2015)

Both are pretty dark themed dramas about school bullying. In both dramas the main lead tries to change something with her positive attitude. While LIFE handles the bullying between students Angry Mom takes it even further. Both also have some comedic elements to relieve the dark theme of the dramas. Totally recommend both dramas !

MAYBE CONTAINS SPOILER

in both of them, there is a bad chairman who ruins others life by bribing police, prosecuter or teacher
also the main character suffers from injustice
and the main character tries to destroy bad chairman.
romatism is less than itaewon class but good.

They have similar themes of good vs bad and also strong thru line concerning family.

Very similar feel that constantly has you hoping/rooting for the best while the protagonists are thwarted at every turn.

Angry Mom is a drama and She's on Duty is a movie, but they both have driven female leads who go undercover as a high school student.

Both dramas are similar as they highlight the difference an adult's influence can make in a child's behaviour and upbringing, although the nature of relationships shown in the two are different. Both feature strong female characters who will do anything for their respective children, and kind caring teachers who work with the main characters to get to the bottom of the mystery.