I really, really enjoyed this manga. By the time I reached the latest chapter -- chapter nine as of currently -- I was nearly bouncing off the wall with adrenaline and demands for more.

Such 'revenge against bullies' type manga often has this effect. Really, it's essentially their purpose. Our hero achieves 'justice' against despicable people and, in the process, makes the readers feel good that 'bad people' get their due punishment and the bullied gets a sense of closure.

Fukushuu Kyoushitsu is exceptionally good at this for a few reasons, but first and foremost is that the main hero, Ayana, uses her smarts rather than a sword to administer justice in a 'reap what you sow' sort of way. That is she often uses the vices of her bullies in order to get them punished.

This is a surprising good method to go about it. To begin, it teaches you what her bullies did to her and, simultaneously, also introduces their method of downfall. From then on, you're left wondering how she will utilize their vice in order to bring them down. It also helps that 'feel good' feeling because you're seeing people sort of bring about their own downfall (even if Ayana does help things along).

The manga does have its flaws. The issue, I think, is that it doesn't weave its subplots well.

For example, shortly after her revenge begins, a series of 'revelations' begin happening. This is expected and normal, but the author doesn't go about it very well. The revelations would have us believe in things that, frankly, seems contradictory/absurd/overly convenient in the context of what happened. If the revelations were to be believe, then had Ayana just waited a week or two, then things would have completely turned around for her. Bullying stopped, possibly a new boyfriend, and etc. Really?

The manga is also building up some other subplots that hasn't gotten far, but it already has that 'conspiracy' vibe going on. It remains to be seen how well the author does it, but I'm not confident so far.

Still, for what it's worth, Fukushuu Kyoushitsu has been a really fun manga to read and I do recommend it. The subplots are enough of a background then that its nonsensical progress won't be a real distraction to the fun of the main plot.