How versed are you in the things they are satirizing?
It's played pretty straight, so if you don't know what they're making fun of, it gets lost on you.
Still, I thought there were some good lines, mostly the younger students confirming obvious details.
'We didn't know what it was until we smelled poop, then it was like 'yeah, that's poop. . . . '
Also, did you watch the first season? I've only seen 1 1/2 episodes of this season, but last season had more out-and-out laughs, because the performers were written more stupid and unaware. It was about the mystery of who spray-painted a bunch of dicks on the cars in the teacher's parking lot.
In that one, the high-tech 3-d rendering of a re-enactment of
If one of the funniest images of the entire past television season.