"I can't beat you in an argument, Leia. I'm no politician, and the ag school in Anchorhead didn't have a debate team."
―Luke Skywalker[src]

An ag school was a type of educational institution. There was an ag school in Anchorhead on Tatooine. Luke Skywalker presumably attended the ag school there.

Behind the scenesEdit

"Ag school" is a common abbreviation for "agriculture school" in the real world, and since the Humans on Tatooine were mostly moisture farmers, it is likely that this is the case in the Star Wars universe as well, though it is not explicitly stated.