When the students start participating in a new online trend that causes disruption to the school, the teachers band together to put an end to it. Meanwhile, Mr. Johnson provides comforting life advice to Gregory; and later, the teachers finally meet Jacob’s boyfriend, Zach, who joins in to help stop the students “desking.”

While on Abbott's annual zoo field trip, Tariq reveals that he has been offered a job in New York; Janine struggles with a big choice; Barbara starts questioning her future after finding out her favorite tuatara has been retired because of old age.

On the last day of school before winter break, Janine is convinced by her friend to go to a popular hookah club where she runs into unexpected colleagues. Elsewhere, Jacob crashes Barbara and Melissa's traditional holiday dinner and in the process begins to learn the true meaning of Christmas.

On Valentine’s Day, the Abbott teachers discuss their relationships and plans for the holiday. Janine finds out one of her students has a crush on her and when turning to a colleague for advice, she inadvertently learns a secret about another teacher. Elsewhere, Ava sits in on Jacob’s Black History class after receiving a complaint

When Barbara's church choir uses the gym for rehearsals, Ava notices tension in the group. Jacob's eagerness for a full social calendar worries Gregory. Melissa and Janine investigate a new substitute.

It’s the last day of school! Ahead of summer vacation, Janine throws the perfect end-of-year party for her colleagues and friends, taking all their interests into consideration.

When the teachers hit a karaoke bar for a night of fun, Jacob bumps into an old friend.