Dewey Finn, a rock musician, becomes the new substitute teacher for a class when their teacher, Mrs. Calpakis, was taken to rest indefinitely due to falling from a skateboard. The students quickly discover that he's not a real teacher. Mr. Finn then discovers that the students are very talented with music and has an idea to have them play rock music to learn. The students like it at first, but they're afraid that Principal Mullins will catch them so they come up with a plan to be a secret band. Mr. Finn thinks that he's not qualified to be a teacher and decides to quit, but the students convince him to come back and start a secret band which he agrees to.

The band needs a singer to be able to compete in "Battle of the Bands", so Summer decides to do it so that Freddie will notice her. The problem is that she can't sing, so Tomika teaches her but still isn't able to get it right. Tomika helps Summer by having her lip synch and Tomika will do the actual singing. The class realizes that Summer can't sing and that Tomika can. The class tries to convince Tomika to be the singer but she rejects the idea. Summer then tries to convince Tomika to be the singer and finally Tomika agrees.

In an effort to provide warnings whenever Principal Mullins comes to the class, Lawrence inadvertently suggests putting a camera on the class, which disables the band's ability to practice. Meanwhile, Mr. Finn helps Summer for the speed debate contest through rapping. As Mr. Finn and Lawrence install a loop video of him teaching on Mullins' office computer, Summer buys them time by slowing down the debate, but goes rapping when they are finished, which makes her win the speed debate. The next day, Principal Mullins asks Lawrence to uninstall the camera due to a video of her dancing in the hallway getting leaked.

When Zack's father catches him playing rock on the electric guitar when he is supposed to be playing classical music on the classic guitar, he moves Zack to another class, convinced that Mr. Finn is a bad influence on Zack. The class that Zack is moved to is very boring and Mr. Finn, Tomika, Lawrence and the gang must work together to get Zack back. They devise a plan: every time Mr. Finn comes with a distraction for Zack's new teacher, Zack jumps out of the class window to escape for band practice and Freddy and Lawrence catch him. However, Principal Mullins catches Zack when Freddy and Lawrence run away when spotting her, leaving a clueless Zack to jump out right in front of Principal Mullins. Zack's father is called to the school and talks to Principal Mullins, Mr. Finn and Zack. After discovering that Mr. Finn has been able to influence Zack to be able to express his opinion by himself like Zack's father has never done, Zack's father agrees to let Zack return to Mr. Finn's class. The episode ends with Zack returned to Mr. Finn's class and the band being able to continue holding practices, ensuring the continuation of the band.

As the band gets their first gig on the birthday party of a seven-year-old girl, they are faced with a challenge: they have to choose a band name or else they will end up with a princess band name. Mr. Finn suggests "Paradoxx", but nobody seems to like that idea. After a lot of arguing over the name, the band splits up to two parts, "Summer and the Timewarps" and "Smog Check". Mr. Finn gets them back together by lying to both of them that only they will be performing at the birthday party. The girl notices that the band split up and makes the princess she hired as a backup perform a song instead, but after some time, the band stops fighting and they sing a rock version of the princess' song, and everyone likes it. They end up with the name "School of Rock".

Tomika becomes shy after her brothers post some videos of her making silly faces while practicing at home. Mr. Finn helps her overcome her fear by suggesting her to take inspiration from her idol, who is Demi Lovato. Mr. Finn lies that he knows Lovato, who is in town for the week, but he fails to find her in the hotel because she used a fake name. Meanwhile, Tomika dresses up like Lovato, but she ends up pushing the band too hard by trying to match Lovato's band too closely. Tomika apologizes to the band for pushing them too hard, and after some rehearsals they have done earlier, they end up performing Lovato's song "Heart Attack" by being themselves rather than trying to copy her band. As Mr. Finn enters the classroom dressed up like Lovato, the students immediately recognize him and he says he was unable to find her. To everyone's surprise, Lawrence says he met Lovato in the hotel, and everyone gets tickets to her show that night.

The band rehearse their song for Battle of the Bands, unaware that Justin and The Night Lizards is spying on them. The band sneak out of the school to go the competition, outsmarting a suspicious Clark. However, they face some troubles on their way. When they arrived wet, they are denied entry, so they decide to put some pajamas (as there was only a pajama store open nearby). Things got worse when they discover that their song is being performed by the Lizards. As they begin to lose hope, they rehearse "Shut Up and Dance" on the rooftop, where the Lizards lock them up. To cheer the kids, Mr. Finn encourage them to perform for themselves. The judges overhear their performance and go upstairs, where School of Rock was crowned winner, much to the dismay of Justin. As everyone is upstairs, Clark failed to show Principal Mullins that the students snuck out.

Special guest star: Pete Wentz

After their victory at Battle of the Bands, they still have to keep their band a secret. Unexpectedly, Mrs. Calpakis returns and Mr. Finn was released from duty. The class gets bored by Mrs. Calpakis' strict guide-ridden teaching style. Then they realize they would rather have Mr. Finn as their teacher and they plan to get Mr. Finn back. Principal Mullins agrees to rehire Mr. Finn as a regular teacher for kindergarteners, where he gets tortured by them. When the kids discovers that Mrs. Calpakis could discipline the kindergarteners more, Summer made a deal with them to exchange their respective teachers. Mr. Finn finally becomes their regular and permanent teacher.

Guest stars: Brec Bassinger, David Pressman, Meyrick Murphy

As Freddy and Kale become closer friends, Summer becomes jealous because of Freddy's relationship with Kale. The band performs in disguise at the school dance, so their identities are not known and remain secret. As they wearing helmets as part of the performance, Summer decides to reveal her feelings to Freddy. Unfortunately, it is not Freddy who is at drums at that time, but the janitor who works at school, and Freddy ends up dancing with Kale which is found out by Summer. After all, the drums are being played by Lawrence's drum machine.

Future Superstars, a singing competition and Summer and Tomika’s favourite show comes to town. Summer wants to audition with Tomika, but Tomika wants to audition alone, fearing that Summer would embarrass herself. Summer has Mr Finn hypnotise her to sing beautifully so she can audition with Tomika without embarrassment. Summer performs Hide Away in front of the whole class, much to their amazement. After the performance, Summer finds out that Tomika only wanted to audition alone because she is afraid that Summer would embarrass her, they have a fight and they storm out of the classroom. Later, at the audition, they reconcile with help from Mr Finn and they decide to audition together. However, after the judges repeatedly say the trigger word for Summer’s singing, Summer sings horribly again. Summer tries to let Tomika audition alone, but Tomika says that no matter what, they were best friends and would audition together. Later, it is revealed that their audition was so terrible it made the episode where they showed the failed auditions.

As Halloween approaches, the students inform Mr. Finn that Principal Mullins has banned Halloween and changed it to a harvest festival. With Principal Mullins sick, the school holds a Halloween party, where Vice Principal Sternhagen offers a pizza party for the scariest class. The band competes with Clark's class by building a haunted house, where it almost fails when a drunken by meds Principal Mullins returns to school. When she's aware of what's going on, Freddy pretends to be the schoolboard head to praise the Halloween celebration, making Principal Mullins officially disband her restriction towards Halloween.

When the cafeteria gets closed due to a rat invading it, Zack brings a food truck to sell his "Meal Shakes". It is a success until Justin from the Night Lizards comes to the school and brings his own food truck and sells sticked food called "Stick It to Ya!" in revenge for School of Rock's victory in Battle of the Bands. The food trucks compete as the Principal only allows one to operate, and Stick It to Ya! quickly outshines Meal Shakes. Zack gets angry when the rest of his band mates eat Stick It to Ya!. They make it up by helping Zack improve his truck and promoting it better, which beats Stick It to Ya's popularity and forces Justin to leave the school in disgrace. Mr. Finn is assigned to catch the rat, but is so frightened. He overcomes his fear when the rat is willing to go to the cage and in return he secretly keeps him in his teacher desk.

Summer is very jealous of Freddy’s relationship with Kale. After a few failed tries to get Freddy’s attention, she almost gives up when Kale asks her what to give Freddy for their one-month anniversary. Summer attempts to sabotage their relationship by telling Kale to give Freddy a hat, which he will hate. She plans to swoop in with the perfect gift for Freddy after he unwraps Kale’s gift. Tomika tries to stop Summer from doing it, but to no avail. At the last moment, Summer decides against it and quickly swaps Kale’s gift for her own. Although Kale and Freddy are still together, she is satisfied she did the right thing. Tomika tells Summer that she is proud of her.

Guest stars: Brec Bassinger, Ivan Mallon, Will Kindrachuk

Special guest star: Ryan Tedder

Guest stars: Brec Bassinger, David Anthony Higgins

Guest stars: JoJo Siwa, Chelsea Ricketts, Jason Michael Snow

Guest stars: Hey Violet, Haley B. Powell, Shelby Simmons, Marianne Muellerleile, Michael Marc Friedman

On a stormy day, Tomika is playing in a puddle inside the school and encourages Summer to do the same; however, when Summer tries, she slips and falls into a bucket. A stranger offers to help Summer out of the bucket, but when she looks up, she discovers it is Justin from Night Lizard, who claims they have been repeatedly failing to get a gig. Still upset about the trouble he has previously caused, Tomika is quick to not trust him, despite him apologizing. Meanwhile, Freddy, Zack, and Lawrence pull a prank on Mr. Finn involving an oatmeal cannon. Upset that this happened, he wants nothing more to do with pranks, but when Zack says that they also wanted to pull the prank on Summer, he suddenly changes his mind. When Tomika and Summer walk in, Mr. Finn desperately tries to get the prank to succeed. However, when Summer sits at her desk and takes out a pencil, nothing happens. Mr. Finn then becomes upset and looks into the desk's cubby, only to be shot with oatmeal again. Later, Zack and Lawrence find and start reading Summer's diary. At first, Freddy disapproves of this; however, when he hears that it is about what to find in a perfect man, he quickly changes his tune. Meanwhile, Tomika and Summer are in the classroom when Justin walks in, whom Tomika still does not trust. When Justin hears about how smart of a manager Summer is for School of Rock, he suggests that she manages Night Lizard. Summer wants to help, but Tomika does not believe a single word. Later, the group discovers that they were not chosen to perform in Battle of the Bands, which upsets Tomika. Wanting to see who stole their gig, Tomika later brings the group to Battle of the Bands. She then discovers that the band who stole their gig was none other than Night Lizard and that Summer agreed to be their new manager. The next day when Mr. Finn calls a band meeting, Tomika states that Summer is no longer School of Rock's manager, which upsets Summer, who was just trying to help someone, causing her to leave. In the hallway, Summer tells Justin that she is no longer part of School of Rock. Justin then casually enters the classroom to check up on the others and is very sarcastic about the situation on the way out. Later, the others discuss about firing Summer, which pleases Justin. Mr. Finn then states that School of Rock is officially broken up, which further pleases Justin, who has been listening outside. Mr. Finn then opens the door and Justin falls on the floor. Tomika then confronts Justin and insists it is his fault, which at first he sarcastically denies, but then admits it was him. When Tomika threatens to tell Summer, Justin tells her he will just deny it and that Summer will believe him because she is a softy. Unfortunately for him, Summer has been in the cabinet listening to everything. Later, Freddy, dressed as the "perfect man", runs into Summer's grandmother, where he discovers that the diary belongs to her and that she just lent it to Summer for her creative writing class.

Guest stars: Kendall Schmidt, Mindy Sterling

Guest stars: Brec Bassinger, JoJo Siwa, Lilimar, Haley B. Powell, Greg Romero Wilson, Sean Whalen

Special guest stars: Pete Wentz, Pat Monahan