Lainey is excited to be back to work, but Mellor warns her that being a pal to her students is not a good idea; Principal Glascott introduces the newest science teacher to the faculty, but CB is skeptical of her no-nonsense approach.
After watching the classic film "Rudy" in C.B.'s class, a student wants to play football; Principal Glascott suggests Lainey find a girlfriend to give her advice on life, so she tries to befriend Wilma.
Hoping to improve the football team's chances at winning the title, Mellor and Glascott recruit star soccer player Felicia to kick field goals; CB chaperones an overnight ski trip and hopes to get in some quality time with Lainey.
When a bad flu epidemic hits, Coach Mellor is sent to his sick bed and Principal Glascott must step it up as the wrestling coach with the Jenkintown Cup on the line; Lainey takes a class with CB as her teacher.
Coach Mellor is excited to celebrate Halloween in a couple's costume with Julie, but his plan might be derailed by Principal Glascott; CB tries to scare the students into not tormenting each other during the school's Halloween parade.
Lainey is asked to direct another school musical, but she is unsure if she can top herself after the success of last year's show; Coach Mellor's athletic records may soon be broken, so he must find a way to keep his name in the spotlight.
CB celebrates Thanksgiving by having all of William Penn rally around him after a cooking incident at his house; the alumni faculty football game brings out the competitive sides of Wilma and Coach Mellor.
Learning he's not into baseball cards, Coach Mellor encourages Toby to be competitive in CB's Pokemon club; Lainey supplements her salary as a teacher by working at the local video store and learns an important lesson.
CB hopes getting Lainey a Beanie Baby for Christmas will show his true feelings for her, but it doesn't go as planned; Principal Glascott tries to convince Felicia that she needs to participate in a Kwanza play he has written.
Wilma encourages Ronnie to pursue his dreams of being in a boy band but goes too far when a music video gets out for William Penn to see; the school hires Aunt Julie as the nurse, which quickly affects her relationship with Coach Mellor.
Principal Glascott and Lainey struggle to agree on what is an appropriate dress code; Coach Mellor struggles with his relationship with Julie because she doesn't enjoy sports like he does.
Lainey has a realization about CB; Principal Glascott uses the season's bad football team to teach Coach Mellor how to be both a good winner and a good loser.
Lainey figures out her feelings in time for Valentine's Day; Felicia is having body image issues; Coach Mellor throws a workout camp to help Felicia's self-esteem.
Wilma steps in to help CB move on from Lainey with help from Coach Mellor; Lainey learns she has unresolved issues from her past when mentoring a student.
While preparing students for the school's show choir, Lainey realizes Wilma might be a better singer than her and gets competitive; Coach Mellor and Aunt Julie fight over how to parent Toby.
Cool parent Greg distracts CB from being a good teacher to help his son Weasel receive extra credit; Principal Glascott approves the use of former Principal Ball's parking spot as a community garden.
With some encouragement from Coach Mellor, Lainey reunites with her mother; inspired by the film "Good Will Hunting," Wilma adds a new, unorthodox addition to the robotics club.
Coach Mellor deals with jealousy issues after learning Julie is friends with a handsome doctor; Glascott appoints CB to be substitute principal after his surgery, but he needs Lainey to solve a problem that he can't.
CB is smitten with environmental consultant Paloma, who was hired to oversee William Penn's Earth Day activities; Wilma gets a surprise after convincing Lainey that yearbook superlatives are not important.
Lainey has a difficult choice regarding her relationship with Barry and her friendship with CB; Coach Mellor and Julie are put in a tough parenting position when Toby is invited to prom as a freshman by a senior.