Class 3-C is a fictional classroom setting featured in the anime and manga series Assassination Classroom. The class consists of students who are often seen as misfits or underachievers, struggling academically and socially. Their teacher, Koro-sensei, is an unusual octopus-like creature with extraordinary abilities, who has been tasked with preparing them for a unique challenge. The primary goal of Class 3-C is to assassinate Koro-sensei before he destroys the Earth. Throughout the series, the students develop their skills and teamwork while learning valuable life lessons. The story highlights themes of growth, friendship, and the importance of education.