Miss Landers is wearing an engagement ring while talking on the phone with June. Subsequent to the episode in which her engagement was announced (Miss Landers' Fiance (1960)), this might be the only other time in the series when it was indicated she is to be married.
As Eddie is changing the grade on the report card, we see it in close-up. The two hands shown belong to two different people even though Eddie is alone at the desk.