Zan Sayonara Zetsubou Sensei is a tV series anime that premiered in summer 2009, produced by Shaft.

About the production: the story comes from a manga, there are 13 episodes of about 23 minutes and its current status is "finished".

Its main genres are comedy, with themes such as Satire, Teacher, Surreal Comedy and Parody.

On AniList, Zan Sayonara Zetsubou Sensei has an average score of 77%, a very good score, and appears on 26,109 users' lists.

The franchise continues in or follows from: Goku Sayonara Zetsubou Sensei and Zan Sayonara Zetsubou Sensei Bangaichi.

Nozomu Itoshiki is still the bizarre teacher of the even stranger Class 2-H. He attempts to teach his students the negative aspects of the world and society, only to have each circumstance thrown at his face whenever he tries. With more students and friends than before, Zetsubo-sensei's life becomes harder and crazier than ever before. (Source: Anime News Network)

Official synopsis from AniList.