Episode 6

Test Time (テストの時間) is the sixth episode of the Assassination Classroom anime series. The episode aired on February 20, 2015.

Overview
The first midterm of the year is approaching and Korosensei is determined to prepare the students for it. However, Class 3-E believes their efforts will not pay off, which prompts Korosensei to lay out some conditions for the upcoming exam.

Summary
School principal Gakuhō Asano pays a visit to Class 3-E to greet Koro-sensei. Having noticed how Nagisa stood up to Nobuta and Chōsuke, Gakuhō tells Koro-sensei to adhere to his educational system, which requires Class 3-E to be at its poorest to encourage the other students. Noticing the students of Class 3-E only caring about the bounty reward rather than getting high grades, Koro-sensei issues the ultimatum of leaving and destroying the school, should any of the students fail to score well enough in the midterm exams to rank among the top fifty students. During the midterm exams, the students of Class 3-E use what they learned from Koro-sensei's teaching methods to tackle each question they come across. However, they are stopped in their tracks by questions that Gakuhō had added at the last minute without informing Class 3-E of the changes, resulting in none of the students other than Karma ranking among the top fifty students. Downhearted from underestimating Gakuhō, Koro-sensei receives some encouragement from his class and becomes determined to turn things around for the final exams.