Ansatsu Kyoushitsu: Kagaijugyou-hen
English title: Assassination Classroom: Extracurricular Lesson
Japanese title: 暗殺教室　課外授業編
Type: ONA
Source: Manga
Episodes: 8
Status: Finished Airing
Aired: Mar 11, 2016 to May 20, 2016
Duration: 5 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Lerche
Genres: Action, Comedy
Themes: School
Demographics: Shounen

Shorts of Ansatsu Kyoushitsu 2nd Season which adapt chapters of the manga which are not in the TV series. 

The adapted chapters are 78 ("Takebayashi no Jikan") and 79 ("Shihaisha no Jikan, Ni Jikanme"), which are published in the ninth manga volume.