There's a scene with ominous music playing in the background where some trucks crash through a fenced military installation, a door is blasted down and two men are shot with some kind of ray guns and fall to the ground unconscious.
Principal Prickly is zapped by a green glow and disappears leaving his smoldering shoes behind (we see him later being held hostage).
A woman punches a man in the face several times and then in the stomach, and a man punches a man in the face.
There's a huge explosion in the school with the children still inside leaving lots of rubble and smoke, but nobody is harmed.
A giant laser machine fires a green tractor beam at the moon, and a boy faints after seeing the beam.
Men chase a group of children several times.
A girl head-butts a man in the stomach, some marbles are thrown on the floor causing men to fall, a door closes nearly catching a boy who is dragged back by a ninja security force.
The kids plan an attack using soda bombs, silly string, and ketchup and mustard squirt bottles.
There's a big fight with lots of goo and shoving and falling.
A group of guards ends up falling in a ditch.
Men are hit in the face by water balloons, men are tripped by a rope and wrapped in a net, men are bombarded by balls, the kindergartners are loosed on the ninjas, and a man has a huge barrel of chowder dumped on his head (barrel included) and he falls down some stairs.
A group of children take many risks trying to thwart a bad guy's mission: they break into a locked school, they climb through air vents (and fall out of one landing hard on the floor), they scale the side of a building with ropes, and they are almost caught by the bad guys several times.
A man and a boy are locked in a cage.
A woman scales the side of a building and falls, landing on a boy waiting on the ground.
A man wears a mask to disguise himself as someone else and pulls it off to expose that he's one of the bad guys.
A large man yells at and chases a boy.
A woman gets stuck trying to climb through a window.
A boy is inadvertently buried under a mound of dirt by two boys filling in holes in a school yard.
Children stampede through the halls of a school on the last day of class.
Kindergärtners are shown covered with paste and there are references to them having eaten some.
A boy yells in frustration when nobody will believe him.
Two siblings talk very abusively to each other, a coach talks abusively to his team members.
A boy is yelled at and called names by a "military camp" captain (an older boy), bullies yell at younger kids, and a bad guy yells and talks abusively to his cohorts and to some children who are trying to stop him.
Protesters yell and wave their fists at a man.
Mikey burps loudly and it echoes.