This should be a 7-8 episode drama, the last 2 episodes is nonsense and deviates from the main character's objective. Having the art teacher suffers and The Principal pay for his sins is a better ending rather than the current one.
Also the time when they're discussing an interesting topics (Parents that exploit their child, underpaid but also overworked teacher, or misconception between parents and teachers) is when the drama already enter its climax, the first half of the drama discuss a topic that pretty irrelevant from school's perspective (at least in my opinion).
This drama have the potential to become a good one, but the execution is pretty poor in the second half. probably because they spend their entire budget on the opening title.
Celebrity 
Also the time when they're discussing an interesting topics (Parents that exploit their child, underpaid but also overworked teacher, or misconception between parents and teachers) is when the drama already enter its climax, the first half of the drama discuss a topic that pretty irrelevant from school's perspective (at least in my opinion).
This drama have the potential to become a good one, but the execution is pretty poor in the second half. probably because they spend their entire budget on the opening title.
"それは 家族なんです"
I think that the pandemic change the creative direction of the show.
Youtube: https://www.youtube.com/watch?v=A0Sd2zk3iGE
Spotify: https://open.spotify.com/album/2SefMSCTkNiWFHHgs0uGz4
iTunes(JP): https://music.apple.com/jp/album/1555177249?app=itunes&cId=none&ign-itscg=30440&ign-itsct=catchall_p4&lId=22864424&sr=4&src=Linkfire
Komikado: "I reject my humanity and become plant"