YMMV / Zekkyou Gakkyuu

• Alternative Character Interpretation: It's a little unclear if Mii in Make-Believe Sisters is an Enfante Terrible, or just naively imitating what she saw Haru doing/saying earlier or both.
• Anvilicious: Those stories do not stop telling you that bullying is bad and has consequences, even if said consequences tend to come in the form of a terrifying ghost or demon.
• Awesome Music: "Don't Cry," the theme from the live-action movie performed by Shiori Niiyama.
• Fridge Horror: Most of the parents in the manga are never made aware of the horrors their elementary and middle school-aged children go through, and given how themes like bullying are prominent in this series, some of it isn't even supernatural in nature. Think about it: a significant number of these kids don't get a happy ending, and their true fate is unlikely to ever be completely or correctly uncovered by their parents or the police. Take for instance the ending of The Cleaning Man, in which we see Ami's mother talking about making some snacks for her daughter after throwing away the trash, without suspecting that the Cleaning Man passing her by has Ami inside one of his trash bags and is implied to be taking her to a trash disposal factory. Ami will never get to eat those snacks, and her mother will keep waiting for her...
• Harsher in Hindsight: The Boyfriend Lesson (and its epilogue) doesn't sound like fantasy considering that Japan's birth-rate has hit a record low.
• Jerkass Woobie / Karmic Overkill: Some protagonists are real brats, but few (if any) of them do anything so horrible as to deserve whatever horrible fate they often get, especially when they're not even in their teens yet.
• Narm: While the characters are definitely at a impressionable age, the fact that Yomi-sama's Facts - Prequel's popular, genuinely Nice Girl protagonist Asami is ostracized and bullied by the rest of the school (not to mention her own boyfriend breaks up with her) because a divination table-turning game "says" she has a bad personality and is believed by nearly everyone is almost comical. Granted, her friends were the ones who cheated by making the game make up lies about the protagonist, which suggests that maybe the girls in her class as a whole were jealous of Asami from the start and that helped accelerate the process, but it hardly explains all the other classes turning on her because there's a rumour that a fortune-teller spirit didn't take to her.
• One-Scene Wonder:
  • From Girls and Boys, we have Yumi providing the closing narration.
  • The panel where we finally see "Mama" in full from "The Kind Mama's House" is very memorable.
• Squick: In The Last Christmas the Bad Santa not only killed a twelve year old girl, but raped her as well. This is also the implied ending for our protagonist, who is then chopped into pieces and left on the doorstep of the friend that she had betrayed and insulted as the "present" for that year.
• Unintentionally Sympathetic: Thanks to gratuitous use of Cruel Twist Endings and Character Development that often leads to them becoming more self-confident or empathetic, a lot of the protagonists generally don't deserve their ultimate fate.
• What Do You Mean, It's for Kids?: This series runs in a magazine aimed at 10+ year old children and majority of the protagonists range from 12 to 14 year olds, meaning they are reading horrible stories of bullying, Body Horror and Fridge Horror. This has shocked some parents so much, that the mangaka was asked to tone it down a bit, which is why some of the more recent stories tend to end up happier.
• The Woobie: Most of the protagonists do not deserve the cruel fates that befall them.