At my school we bought 3 sheep and painted on them 1, 2 and 4. We let them on the sports pitches until the staff gathered them up. They then spent the remainder of the day looking for the 3rd
I've heard that before, which make me think you're lying. I highly doubt you went out and bought 3 sheep, and then somehow got them to your school without anyone noticing, unless your school is on a farm. Plus I can't see sheep being cheap, so you must have wasted shit loads of money cos I also doubt your teachers would have given you them back.