Assassination classroom a mix between(of some themes) The Karate Kid ,El Profe (with Cantinflas) and literally a Mission Impossible. The show is something to be remembered by with its sorta dark comedy,and its many life lessons with each student in, which Koro-Sensei helps them and his character is both funny and heart warming; watching this show and main character Nagisa Shiota and Karma Akabane are the best characters in this show the other characters are very love-able and you feel attached to them to the end.
p.s they should do a season 3.