The Teacher

One day, a crate arrived marked TEACHER on the side.
An electrical cord dangled out from a hole.
“Plug it in for 8 hours,” a note said.
So, the principal did.
All of the kids sat quietly while the box hummed slightly.
After 8 hours, the crate was unplugged and the kids left.
Until it was school time again. Once again, kids sat down and it was plugged in.
A dozen kids showed up on Saturday, wanting to learn more.
“Go home,” said the principal.
None showed up on Sunday. They were at church, staring at a crate marked PREACHER.