Seito Shokun! (2007)

Both are school drama, portraying a new teacher coming to class, and the students are against it.

Similar in theme to Seito Shokun:
Gokusen has a female teacher with strong beliefs who teaches them about life, friends and value of responsibility.

GTO, this time a former gang leader now turned teacher who looks to help his students.

Both dramas are school-themed, both with dedicated teachers who care deeply about their students, some of whom have lost their trust in teachers/adults.

Both dramas are school/dedicated-teacher themed, both with students who have lost faith in adults, and both are a great watch!

Both dramas are school/dedicated-teacher themed, and in both dramas, the students who are villainized by the schools are actually only victims who have been mistreated and labeled by adults.