At the local high school a few days ago, someone spread about 6 tons of chicken manure all over the front entrance, sidewalks, and parking lots. This is a very rural area so tractors, manure spreaders, and chicken poop are readily available. Now this may not have been a senior prank as the principal said the following at the graduation ceremony: "I want u all to soar like eagles, not scratch in the dirt like chickens."
Now some of the local chicken farmers didnt take kindly to that remark. Especially since they make far more per year than the principal does.
Prank #2-- Same school a few years ago. The name of the school is in big letters screwed to the wall near the roof. Some seniors went on the roof and all they had to do was remove a few letters to change the name to:
COLONEL HARD ON HIGH SCHOOL