Public School VS Private School

A kid is flunking a public school, so his parents move him into a private school.

All the sudden in the private school his grades skyrocket up to A's.

Then one night at the dinner table his parents ask,"Why were you doing so bad in a public school, and when we switched you to a private school you did so well?"

The kid responds,"because I knew they were serious about school.

The first day I walked in they had a guy nailed to a plus sign."