Like many other people already said, I also like the turn of events with Nano going to school.
My opinion on Hakase also changed for the better and I think the show will overall be even more enjoyable from now on.
The Go-Soccer scenes were hilarious and I love that they even added it to the new OP. I hope it will bring Takasaki-sensei and Sakurai-sensei closer since I found his confession some episodes back really cute.