Mrs. Adler announces she's pregnant; back in time, during the 1940s, the women of Fillmore fight for better treatment at work.

Ms. Snap changes the school lunch menu while Ms. Feldman starts an underground junk food ring; Hot Dad volunteers for lunch duty and Ms. Bennigan works up the nerve to ask him out on a real date.

Ms. Cannon discovers that one of her students is an artistic prodigy. Mrs. Adler and Ms. Watson take the mini-society competition to a new level.

Ms. Watson and Principal Pearson struggle with balancing their new romantic relationship at work; Ms. Feldman takes April Fools' Day too far.

Ms. Bennigan is worried that Hot Dad is back together with his ex-wife. Meanwhile, Ms. Snap uses the school dance to impress a famous radio host.

A trip to the gynecologist sends Ms. Watson and her ticking biological clock into a tailspin, while Ms. Cannon and Ms. Snap prepare for the dreaded standardized testing.

When the Wi-Fi goes out, Ms. Snap is forced to go into the forgotten and seemingly haunted library in order to get a book. Ms. Watson has a confusing dream about Principal Pearson.

Ms. Watson tries a premium online dating service; Ms. Snap learns she's teaching the worst group of kids in the school; Mrs. Alder is assigned a mobile classroom.

Ms. Bennigan learns Hot Dad's son has to repeat second grade. Ms. Snap brings her dog to school as a therapy dog. when Ms. Feldman has to teach her students Common Core, she discovers it's more complicated than she thought.

Ms. Snap decides to run for School Council and is thrown into a world of double standards. Ms. Bennigan, Mrs. Adler, Ms. Feldman, and Ms. Cannon help with the campaign, but Ms. Watson takes longer to get on board.

Ms. Feldman struggles between her budding romance with Fillmore's new anti-drug officer and her love of marijuana. Ms. Watson becomes addicted to bingo. Mrs. Adler wreaks havoc when she tries to quit smoking.

Ms. Bennigan decides to ask Hot Dad out during a chicken pox epidemic at the school. Ms. Snap discovers she has a gender bias.

New security is hired after a trespasser hits Fillmore. A “Women Empowering Women” workshop is held by Ms. Snap and Ms. Bennigan. Mrs. Adler takes the concept of "stranger danger" too far. Ms. Watson buys a male safety dummy.

Mrs. Adler moves into a tiny house with her husband. Ms. Cannon's jewelry shop goes under and Ms. Watson and Ms. Snap try to boost her spirits. Ms. Feldman fakes a lesson; and Ms. Bennigan struggles with a student.

Ms. Feldman can't make ends meet on her salary and takes a second job. Ms. Watson notices a romantic spark between two of her second grade students. the teachers take advantage of Principal Pearson.

Ms. Snap struggles with the idea of turning 31 and tries to regain her youth. Ms. Bennigan offers to baby-sit Blake for Hot Dad. the teachers deal with every teacher's nightmare when the copier breaks down.

Mrs. Adler coaches kickball and Principal Pearson discovers the teachers' skeletons in the janitor's closet after reviewing security footage.

Ms. Snap and Ms. Bennigan's relationship is tested when Ms. Bennigan and Hot Dad become official. Ms. Feldman and Mrs. Adler go on the hunt for Fillmore's most disturbing troublemaker.

When a tornado touches down near Fillmore, procedures go out the window as the teachers panic. Horrified by their negligence, Principal Pearson puts the teachers on probation until they complete a team-building course.

Tensions run high between the teachers as the school year ends; asbestos is discovered in Mrs. Adler's trailer.