CBR lists their top 10 cringiest tropes in teen tv shows. I pretty much agree with all of these - especially #1.
https://www.cbr.com/cringey-teen-tv-...s-for-students
10. Unrealistic Clothes For Students
09. Prom As The Ultimate High School Experience
08. High School Hierarchies & Cliques
07. The Pick-Me/I'm A Different Person
06. Love Triangles
05. Physical Perfection
04. The Newcomer
03. Ugly Ducklings
02. Backstabbing Best Friends
01. Everyone Is An Ivy League Overachiever