The Janitors Cart
Does your school janitor drive around the campus all day in one of those industrial golf carts? Well, when he isn't paying attention tape a few condiment packets to the wheel. They will explode when he runs over them and leave a ketchup trail that he will have to clean up.

Chalkboard Prank
drill a tiny hole into the front end of your teacher's chalk. Then place a match inside and cover the top of it with chalk dust. The next time your teacher uses the chalk, if there is enough friction while writing you will all begin to see smoke.

Gatorade Gone Bad
While your school's basketball or football team is practicing, empty out their gatorade bucket and replace it with water, mixed with salt and food coloring that looks like the gatorade color you just dumped out.

Monkey Face
You could either take a picture of your victim's face and paste it on a monkey's head using Photoshop and print it out on your home computer. Or, just print both pictures out and cut out his or her face with scissors and paste it with glue over the monkey head. Then go to your local Copy store and make dozens of copies. Then pass them out all over school the next day.

High School Girls
Go up to your mother with a serious face and tell her you are pregnant. You can even make up a story like...you don't know how it happened or who it was or anything. Then be sure to tell here she has been pranked!

Which Door?
Print out a bunch of signs that read, "Please Use Other Door". Then during class, ask to be excused so you can use the restroom. Then hurry and place the signs on all the doors in the building that go outside. When the bell rings watch as people scramble around looking for an exit that doesn't have a sign on it.

Milk, Eggs, And Cheese
Fill a soda bottle with milk, eggs, and parmisan cheese. Wait a couple of weeks. Then take the bottle to school and place on the bathroom floor. Unscrew the lid and stomp on the bottle. It will leave a big stinky mess all over the floor. Now walk out of the restroom like nothing happened.

Mysterious Library Stinch
Grab any book off the library shelf. Take it with you into the bathroom. Use an exacto knife to cut a square out of the center of all the pages. Then take a crap and place some of your poo inside the square. Close the book. Go put it back on the library shelf. It will begin to stink so bad and nobody will know where its coming from.

Bathroom Out Of Order
During class, asked to be excused to use the restroom then close the bathroom door and put a printed out of order sign on the door. Then return to class.

Caffeteria Blow Shooters
Tear pieces off the wrapper of your straw and roll them into little balls. Place them inside your straw, aim at your target victim and blow. The little paper ball will shoot out and hit your victim where ever you aim.