You can find the full series and watch it on several major streaming platforms:
Assassination Classroom (TV Series 2013–2016) - Episode list - IMDb Gledajte Ansatsu Kyoushitsu (TV) 2. sezona, epi...
: This is the primary official source for watching the series. You can find both Season 1 and Season 2 of Assassination Classroom with subtitles and dubbing. You can find the full series and watch