Teach You a Lesson

Literally almost the same vibes — the comedy, the cases, and the overall feel. Both have a quirky male lead who helps people, and both male leads lost their fiancée/wife, which is one of the reasons why they ended up helping others.

- both dramas are about fighting against the bad guys and serving justice through non-judiciary means (TYL is about school bullies, TG is more into the society as a whole)
- both result in satisfying punishments (using physical force, violence)!!!
- both involve a team working together (TYL team is approved by the minister, TG team is more like vigilante)
(both teams are consisted of a smart/powerful leader, strong members, and an IT geek)
- both tackle many cases throughout the show rather than involving just one big case
- badass main characters (and FL)!!!

They solve different case each ep like this one.. Law School takes all cases where teach you a lesson takes only school related case.

Both are dramas dealing with school violence. ONE is more similar to WHC, but still falls within the school violence with bullying and harassment.

Trigger has a case similar to TYAL, where two adult main characters try to help a bullied school student in two very different ways. There’s the usual school violence and that case goes on for quite long.

Class of Lies investiga un solo caso de asesinato ocurrido en una escuela. A diferencia de Así Aprenderás, donde cada capítulo presenta un caso distinto, esta historia se centra en un único caso, protagonizado por un grupo de estudiantes en el que cada uno resulta más villano que el anterior.

School violence and bullying are central themes.

Teach You A Lesson has some clips from the prequel of Study Group 2 at episode 2, 2:33, specifically, the tattooed gangsters.

They also share the same 'Blue String Universe'.

Both dramas center around uncovering hidden truths within a school setting. High Cookie focuses on the mysterious and dangerous allure of a magical cookie that grants desires but comes with a steep price. On the other hand, Teach You a Lesson takes a more grounded, analytical approach, following a specialized team as they resolve complex student issues and restore harmony to challenging school environments.
Compelling Character Dynamics: The character writing in both series is top-tier. Instead of typical high school tropes, you get multi-layered leads who are highly intelligent, calculated, and determined to protect those who matter to most to them.
The Brilliant Kim Mu Yeol: The absolute highlight for fans is seeing actor Kim Mu Yeol shine in both series! He shows incredible range, transforming from the enigmatic, calculative exam consultant Yoo Seong Pil in High Cookie into the highly charismatic, sharp, and commanding field supervisor Na Hwa Jin in Teach You a Lesson. His screen presence alone makes both shows worth watching

Kind-hearted and handsome office worker Nomura Hiro and his cheerful, energetic wife Nomura Sae, a former hostess, are enjoying newlywed life in a small apartment. However, Hiro has grown frustrated with Sae, who struggles with cooking and housework and tends to run back to her parents’ home whenever they argue.

In the middle of one such marital dispute, a new neighbor, Shiraishi Miko, moves into the apartment next door and comes by to introduce herself. Instantly smitten with the kind and handsome Hiro, Miko begins sharing homemade dishes with him, and before long, they grow closer. She helps with household chores, nurses him when he is sick, and visits his apartment almost every day.

Hiro comes to find comfort in Miko’s devoted care, which feels almost maternal. Although he is occasionally puzzled by her strange remarks and awkward conversations that never quite seem to connect, their friendship continues to deepen.

As Miko becomes increasingly attracted to Hiro, a shocking secret is revealed: despite seeing herself as a beautiful sixteen-year-old girl, Miko is actually a 61-year-old woman. Even knowing that Hiro is married, Miko adopts the philosophy of “If you love someone, take them,” and launches one romantic scheme after another against the Nomura couple. What begins as innocent affection gradually spirals into a dangerous obsession, unleashing a madness disguised as pure love.

It's full of action scenes and thriller and suspense .... It's a mystery like the villain is behaving like a good person they have to find who the actual villain is .and on action .

- weak laws that fail to protect victims ,
- heavily inspired by real-life crimes that actually happened ,

Watch corrupt criminals and untouchable bullies get the absolute bone-shattering, poetic justice they deserve .

both feature an authority figure who completely rejects traditional educational methods. Just like the protagonists in teach you a lesson, onizuka believes some school problems can't be solved through talks or bureaucratic punishments alone. he directly confronts bullies, abusive class leaders, and corrupt school systems, using extreme methods to protect the most vulnerable students.

it shares the same justice fantasy where an ordinary-looking authority figure secretly possesses extraordinary abilities. much like teach you a lesson, the protagonist enters school environments dominated by violence and intimidation, protecting students and taking on threats that conventional teachers couldn't handle. the tone is lighter and more comedic, but the feeling of "the bullies finally met someone stronger" remains almost exactly the same.

Both have bad ass MLs.

Team driven.

Bringing justice and seeking revenge.

Each case are very interesting and satisfying.

Both have an exceptional male lead fighting to change a broken system. Both have a silly but fun second male lead and a nutty but strong female sidekick. Both fight for regular people against politics and corruption.