Tymon Budziński was a sociopath in all his appearances, but after expulsion in episode 80, he returned in episode 145 where he outright resorted to attempted murder math teacher Teresa Kremer whom he blamed on getting expelled.
Patryk Kozub crosses it in his debut episode. When English teacher Anna Turczyn takes away his tablet, he teams up with school bully Gienek Zielonka when they hang innepriopriate posters of Anna Turczyn. But at the end of the episode, Patryk outright attempts to murder Anna Turczyn and at this point, Gienek sees what a psychopath Patryk is. And by his next appearance, his way past his MEH, and now he is full criminal.
In simillar fashion to Patryk Kozub, Kasia Adamiec also crosses it in her first episode. She is a new student who left her old school due to threatening another girl with scissors, and when Żaneta Grzegorczyk sees how agressive Kasia is and attempts to warn Maciek Trojan about her, Kasia resorts to outright trying to murder Żaneta.
Monika Barańska has always been a cruel bully but actually throwing a dead dog under Olga's car shows complete lack of empathy or feelings.
Amanda Rębkowska crosses it in episode 544. At first she seems nothing more then a Clingy Jealous Girl to her boyfriend who simply doesn't let him hang out with other girls, but later she resorts to poison her boyfriend's friend Lena Kędzierska since she blames her on the break-up. And when her boyfriend does drink the juice with deadly medicine, and nearly dies, Amanda breaks into tears but only because "Lena should have drank it and die instead".
Moment of Awesome: A lot. Among others, PE teacher Tomasz Dudziak often coming to the rescue of bullied students.
Jagoda Zabłocka slapping Szczepan Kita who spent a whole episode bullying her. Of course, it's less awesome to watch when he afterwards attempts to drug her in revenge.
In episode 389, it's this for Jadźka Stefaniak. She chooses to participate in a beauty contest but it's revealed it's been organized by a bunch of rich old men who want to objecity young girls and when one of them tries to rape her, Jadzka kicks him the balls and runs away. Later, she also exposes the man in charge of the whole thing to his own wife after he comes to school to pay her so she stays silent. And this is first time Jadźka actually aknowledges she isn't always right and is willing to drop her ego.
In episode 399, Natalia Wielgosz has a much older boyfriend Krzysztof whom she is deeply in love with, while he only manipulates her just to have sex with her (and also is revealed to have a wife and a son). When Natalia's friends steal Krzysztof's wallet and show Natalia actual place he lives (he used a different adress for his meetings with Natalia), she goes to Krzysztof's house and exposes him to his wife by showing her pictures and giving him The Reason You Suck speech. It's really satisfying to see the wife telling him to move out.
They Wasted a Perfectly Good Plot: Happened many times. While episodes do plenty of call-backs to previous episodes involving same students, sometimes, things are one way in an an episide and several episodes later, things are different without explanation what happenened.
For example, in episode 582, Krzysztof “Krzysiek” Łuczak wants to date Nadia who is dating Abib, while Dominik Łuczak (Krzysiek’s older brother) uses it to be racist towards Abib which also results in Nadia ending friendship with Krzysiek. In episode 786, Nadia and Krzysiek are a couple without any explanation how she broke up with Abib and how Krzysiek finally won her heart. While things like that are natural and common, it still could be interesting to have an episode that focuses on how exactly it happened.
Also, in episode 48, Marek Kozioł forms a secret gambling club under guise of "modeling club". When the club gets uncovered, history teacher Zbigniew Małek who up to this point, believed it was a modeling club, permenantly disbands the group. The rest of the group refuse to ever get back to gamling again, but Marek forms a new group with whom he chooses to meet outside of school. Unfortunately, how things turned out for Marek never gets adressed. Marek only makes a brief appearance in episode 70 as a supporting antagonist (who barely even talks; just smiles and accompanies Szczepan Kita) and afterwards, he never returns at all. It would be interesting to see more of his new gambling club.
Also students are recurring characters who return in future episodes, some students never crossover with each other even though, some interactions could be interesting. Iwona Małkowska and Jadwiga "Jadzka" or "Jadzia" Stefaniak are both very self-centered and they consider themselves above everyone else and tend to humaliate and put down people they deem as beneath them. But huge difference is, Iwona Małkowska is certainly way more malicious then Jadzia. Iwona is a rich spoiled brat whom just sees everyone poorer or in any other way less fortunate, as inferior to her hence why she loves to humaliate them needlessly. Jadzia on the other hand, is very smart and knowledgeable science girl who is more of a Jerkass Has a Point since she constantly likes to point out how everyone is stupid and while she most certainly is very self-centered, she is right that almost no student is as smart as her (with exception of her temporar boyfriend Franek Lis). It would be really interesting to have an episode where they both interact with each other and which of the two self-centered girls could really be able to humaliate the other one.
Another example is that in episode 9 there is a student with ADHD Dawid Migutko who has trouble in school and isn't liked by his peers. He tends to overreact to things and has trouble concertrating. Students decide to gang up on him but he turns out to be stronger and savagely beats one of them. Parents want him expelled but in the end, mom takes him to a psychologist and everything is resolved. Sadly, Dawid Migutko never returns after his one appearance (save for one cameo in episode 363) while all other students including Max Nowacki and Rafał Zięcina (guys who ganged up on him) and Kasia Przybysz (girl who wanted to help him) all return and even become some of the most recurring characters (and popular with fans too). It would be great to see how Dawid evolved and continued his education in school. And he could maybe even make friends with his former bullies (considering they are some of the most popular characters in the show) or other people (his cameo in episode 363 implies he is friends with Oskar Kamiński who isn’t liked by aforementioned students and together they actually mock Rafał Zięcina at this moment).
Unintentionally Unsympathetic: Another trope that's used although, considering show's insistance on showing different sides and perspectives and sometimes flipping unsympathetic students to sympathetic and vice-versa, it's debatable how much it's actually unintentional.
In episode 70, Marzena Gabisz bullies her best friend Jagoda Zabłocka to impress her boyfriend, one of the school bullies, Szczepan Kita. And first she confesses to him Jagoda's secret about her crush on Bruno Wasiak and later both Marzena and Szczepan use it to cruelly torment Jagoda. It takes Szczepan to attempt to drug Jagoda after the latter slapped him when he was harassing her, to make Marzena break up with him and apologize to Jagoda. While episode portrays this tragically and that Marzena lost best friend all cause of a boyfriend that wasn't even worth it, it should be noted it's actually hard to find her sympathetic at this point and her downer ending of losing Jagoda and being now object of Szczepan's bullying, comes across more as a commepuence then a true sad story. It should be noted that the idea to set up Bruno and Jagoda was HER idea. Sure, Szczepan said he would break up with her if she didn't continue making fun of Jagoda, but Marzena doesn't hesitate afterwards and gleefully comes up with the plan to set up Jagoda and Bruno all by herself and later, she outright encourages excited and nervous Jagoda to go and see Bruno despite the text Jagoda suppesdly got from Bruno, was actually written by Marzena from Szczepan's phone. Later she sadistically laughs at Jagoda together with Szczepan after Bruno tells Jagoda he doesn't think she is attractive. And later, after lying she took drugs to make Jagoda come to her for help (Szczepan told her to do it), Szczepan attempts to drug Jagoda. Her break-up with Szczepan and apology to Jagoda afterwards, comes across as more Even Evil Has Standards then a true Heel Realization that the show intends to portray it as. Marzena attempts to even defend herself to Jagoda that she didn't know what Szczepan was planning, but Jagoda rightfully points out that a bully like him obviously wasn't going to have good intentions. The fact that in her subsquent appearances, Marzena isn't a nice person and even abuses her new boyfriend later, further makes her completely unsympathetic.
Jagoda Zabłocka doesn’t have any friends in her first appearance and episode 8, is harassed by a man all cause girls from her class posted her naked photo online. In her second appearance in episode 70, her only friend Marzena Gabisz whom it is stated has rescued her from Friendless Background, dates school bully Szczepan Kita and to impress him, she starts bullying Jagoda which permanantly ends their friendship. Thankfully by her third appearance, she seems to have gotten over both things, and wins heart of her crush Staszek.
Zuza Dobosz too. She is bullied and hated by other students all cause she isn’t attractive and is nicknamed “Brzydula” (which is Polish for “ugly girl”) and school playboy Karol Maciąg makes a bet with his friends to “get” her. Zuza trusting Karol reveals she considered committing suicide before he made her feel “alive” again. That also motivates Karol to stop bullying Zuza and tells his friends to stop as well. Which doesn’t stop Zuza from finding out initial reason he went out with her and feeling betrayed. Thankfully like Jagoda, Zuza seems to have gotten better situation as well in subsequent appearances.
