Back from summer break, Mrs. Adler discovers an unwanted visitor in her trailer. Ms. Watson finds herself newly poor, putting the Back to School Mixer in jeopardy.

Toby Pearson learns how hard it is to be a teacher again. Ms. Snap launches a campaign to ban selfies and a pregnant Mrs. Adler garners attention from a doting student.

The teachers find creative ways to deal with a lice outbreak when the administration ignores the issue. Caroline gives Cecilia a driving lesson.

Mrs. Adler has had it with everyone having an opinion about her pregnancy. Ms. Watson joins a makeup pyramid scheme, and Ms. Bennigan gets caught in the middle of disputing custody parents.

Ms. Bennigan tries to win over Blake on a camping trip. Ms. Snap decides to give back to the community.

The Book Fair comes to Fillmore and Ms. Snap is inspired to be an author. Ms. Bennigan, Ms. Watson and Mrs. Adler enjoy gawking when they hire a moving company called Moving Hunks.

Ms. Watson gets evicted and Toby lets her move in to his place. Ms. Snap joins a dating website for well-to-do older men. Ms. Bennigan deals with the awkwardness of seeing a student outside of school.

Ms. Snap is surprised when her mother, Tanya, shows up at a parent-teacher conference. Ms. Watson and Toby prepare a tap dance routine for the talent show. Ms. Cannon forces students to perform a song that will save Mother Earth.

Ms. Snap convinces Ms. Bennigan that Hot Dad is a serial killer who is still at large in Chicago. Ms. Watson attempts to teach her dirt bag student to be upper class. Ms. Cannon wears leggings that leave little to the imagination.

Fillmore Elementary School's new neighbor owns something dangerous that alarms the teachers. Ms. Watson finally has to face Toby.

Ms. Snap contemplates motherhood and the possibility of freezing her eggs. Ms. Bennigan battles technology in the classroom. Ms. Watson pressures her students to win the science fair.

Hot Dad surprises Ms. Bennigan with a visit from her parents, only to realize there is much she hasn't told them. The Teachers of Fillmore vie to be champions of Fillmore Fantasy School.

Mrs. Adler joins a children's music group and is too ashamed to tell the other teachers. Ms. Watson and Ms. Bennigan find their classes passing notes, which causes a rift in their friendship.

Ms. Snap helps Ms. Watson find her inner floozy while simultaneously getting into a relationship of her own. Mrs. Adler and Toby try to teach their students about the effects of bullying.

Ms. Bennigan has two spots left in her bridal party and the three remaining teachers compete to see who will get the final robe. Ms. Watson gets an unfortunate diagnosis.

It's Valentine's Day at Fillmore Elementary School. Ms. Snap and Kyle have trouble communicating. The school is falling apart, and Mrs. Adler makes the repairs herself; Ms. Bennigan deals with a pesky TV cart salesman.

Stricter mandates are required of the teachers. Ms. Bennigan attempts to balance being a teacher and a future stepmother. With no funding, Mrs. Adler, Ms. Watson and Ms. Cannon go to extreme lengths to raise funds for their classrooms.

It's Ms. Bennigan's wedding day, and everything that can go wrong does. The teachers scramble to save this hot mess of a day without Ms. Bennigan finding out.