Treat Getting 101

Kristy had a meeting after work yesterday, so I had to pick C, JP & S up at school. I walked the two blocks to their school, and on the way back was treated to this exchange:

S: Daddy, I got a treat today at school.
Me: A train?
S: No. A treat.
Me: You got a tree at school?
S: No! A treat!
Me: Why do you get treats?
S: We get treats when we’re good at school.
Me: So why did you get a treat?
S: Because Eli was being bad.