Omg I was fearing the worst with this story but it ended up being adorable! I hope the cat is okay and safely at home again.A work colleague of mine in the US got called by her kids' school and asked to come in to 'pick up Sam'.
Sam is her cat.
Her twin daughters snuck the cat out of the house, on to the school bus, and put it in one of their lockers. Unfortunately for them, said locker was right outside the Principal's office and someone heard miaowing from inside it.
She has no idea why they took it to school, but it was in a bag with food and water but had crapped in the bag.
I love that it's pretty much a plot from Sister Sister.