When I saw this fine young lady, she reminded me of someone very strongly, but I was unable to put my finger on it... Now Andy calls it:

Another teacher shown more this ep, reminds me of a cross between Mikuru [Asahina] and Haruka Nogizaka.

Her name is Mayumi Usami (宇佐美真由美).

Yoshinoya-sensei always was too over the top for my taste.