David is in his teacher's office walking up behind her as she has her back turned towards him. When he gets closer to the teacher she turns around with half a frog in her mouth. David watches in horror as she finishes eating the frog. Then the teacher tells David he's not supposed to be in there.

Men are disintegrated by alien weaponry.

Aliens tie down people to a table as a brain-like alien creature emerges and uses a long needle: he penetrates into the back of their necks to implant a device to control them.

A woman is eaten alive by an alien.

Two men who have been controlled by the aliens have seizures on the ground and die.

Shit, ass, and dick are used sparingly.

Mild tobacco use.

Children may be frightened by the aliens hideous appearances.

A kid's parents, teacher, classmates, and even local authorities are all being controlled by aliens and are all trying to find him and kill him. This idea is quite chilling.