It just seems really uninspired, puking and wank gags. It's kind of like taking that school immaturity, which yes needs to be represented in a school sitcom, but it is using that as it's main joke, so instead of combining that with characters that are actually funny and can comment on the 'childishness' going on around them, they just have everyone acting like a 13 year old, with jokes written for 13 year olds.
I mean, the disabled kid unintenionally getting hurt! What next? Somone bad mouthing a teacher who turns out to be stood behind them..Oops!
To me it just seems lazy and uninspired. But yeah judge it on it's merits and all that.