This and the last episode were kind of weak, to be honest. I think both of them could have been combined. The pacing was a bit too slow compared to the rest of the season.
I like the series but the whole school arc is kind of meh. It's more important due to the characters being introduced than the events, I wish that it was shortened too.
I hoped he'd learn something new about the teleportation incident in that school but no, so far it's just some teasing from Sylphiette and pantsu worship.