There's some talk of kissing and references to a crush read from diary entries.

A man is shown in his underwear, he spends most of the rest of the movie dressed like this.

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.

There are several mild anatomical references used as insults along with other non-profane insults and threats.

None.

The chase scenes maybe intense for some young viewers.

The scene when Principal Prickly is zapped by a green glow and disappears may be frightening and intense for some young viewers.