Ready For The Test?
As soon as your victim walks into class, ask him if he is ready for the test today. If there is no test scheduled, your victim will panic. If he needs to confirm the test is today with someone else in class, usually a simple wink at whoever he asks will get the other student to play along with you.

HIdden Channel Surfing
Next time your teacher puts one of those boring videos on during class time. Have some fun with a universal remote! Every few minutes put the voume on mute or change the channels back and forth.

Cafeteria Glass To Table Prank
Glue glasses in a cafeteria to the bottom of a table.

Watch Where You're Walking
Sucker freshmen into walking too close to an active Van-De-Graff generator.

Super Glue Prank
Superglue EVERYTHING in a classroom down. Chairs, chalk, books, whatever. Don't be choosy.

Upside Down CHairs
When a teacher leaves the room, have everyone turn every desk and chair upside down. When the teacher returns be sitting on your chairs working as if nothing had happened.

Dissecting Animals
When dissecting animals, take the liver (or some other brown organ) and place it in the instructor's coffee. Place parts from your dissection in various places around a caffeteria salad bar.

Release The Animals
Release large numbers of pigeons into a gymnasium or lecture hall. Young pigs in the hallway are good too. Even better if they (pigeons or pigs) have been fed laxatives.

Advertise In The Local Paper
Advertise your principal's job in the local paper.

Homophobe Prank
If you know someone who is a homophobe, slip some homoerotic art books in their bag while they are distracted. When they walk through the library's book detector, they will have to empty out the bag revealing the book in question.