The following is a timeline of events pertaining to Assassination Classroom.
The historical timeline relates to events that have occurred prior to the introduction of the story.
March, Year 0
- The original Reaper becomes a test subject in Yanagisawa's laboratory.
- Aguri Yukimura and the God of Death's first meeting.
March, Year 1
- 70% of the moon exploded as a result of Yanagisawa's antimatter research.
- Korosensei escaped.
- Korosensei proposes to the world leaders to destroy the Earth one year later, but promises to first teach class 3-E of Kunugigaoka Junior High School within the timeframe.
The current timeline relates to events that have occurred since the introduction of the story.