The Bad Education Movie is amusing for the first half, then goes off the deep end and becomes much less funny.
What it really suffers from is the same problem most comedies suffer from: the situations are so absurd that you are taken out of the moment. It's only funny if you never think about what would really happen if someone behaved that way. Too many comedies rely on a suspension of disbelief and logic to make their joke
The first half of the movie is fairly typical, bunch of bad seed kids with a jackass teacher doing dumb things. Granted, the opening at the Anne Frank museum was pretty damn funny, but nothing else really stands out. Class buffoonery ensues, the strait-laced mom tries to stop them, and their class trip is not what they signed up for.
The second half involves self-realization and a pseudo-socialist revolution, and it really isn't as funny as it wants to be. The whole tone of the movie changes; it's still trying to be a comedy, but it feels like it was written by someone else. Maybe if it had been just the realization that you can't always be the joker, or just the people rising against the upper class, it wouldn't have felt so awkward.
But that's not what happened, so instead there's a mess of a climax, and shoe-horned lessons, and a lot fewer laughs. It passed the time, but didn't stand out in any appreciable way.
