So, I did a little bit of research http://www.buzzfeed.com/keelyflaherty/the-best-senior-pranks-of-2014#.vglQQg2P0W http://www.mtv.com/news/2121057/best-senior-pranks/ and found that most high school pranks are lacking originality and that certain spark of something special. The only one on these two pages that really jumped out at me was #2 on the second link. I really want to see what ideas the creative minds of this scary little forum can come up with.
My senior year, a lot of students were talking about a prank they wanted to do but never did. They were going to take four animals (I can't remember if it was a skunk or a cow lol) and place them randomly in the school with the numbers 1, 2, 3, & 5 painted on them. Sit back and watch the teachers frantically look for #4... lol