The tone of this arc feels all over the place... Mr. Henderson being unjustly fired should be emotionally powerful, and a serious note in the story... But instead we're watching a bunch of goofy gag character fight scenes with the children...?
It's not like the children are incapable of serious arcs, either. More than half of the schoolbus hijacking was spent with them, and it was largely played straight.
Also if Schlag was going to show up to effortlessly beat everyone anyway, the kids' effort in getting the proof was pointless.
I'm really not vibing with this.