highschool
Highschool is an intermediary between elementary school and college. In the US, it is essentially a federally funded daycare and provides as much of an education as prison provides rehabilitation.
Susie: Daddy, read me a story.

Dad: Uh, daddy can't read.

Susie: Why not, daddy?

Dad: because daddy's highschool didn't think it was odd that he couldn't read or write. They also didn't think it was worth the trouble to fail him if he didn't learn.