The first half of this episode is pure fun. The students show us the full extent of their training as they go to see their teacher one more time. Then we get a lecture about life lessons, which fits with the show so we’ll ignore the fact that it puts a serious downer on the episode. However, we then shift to one final attempt by mad-scientist guy to kill Kuro-Sensei and in the process devaluing everything the students have worked for. While it seems doubtful this will be successful it really seems like a cheap plot device to wring just one more battle out of the series before they activate their laser.
Still an enjoyable series and the end is definitely near.
Assassination Classroom is available on AnimeLab.