AP stands for Advanced Placement. This is a great way for students to experience college level rigor while still in an HHS classroom. Each curriculum is approved by the College Board as being equivalent to a college entry course. The CB offers a test (for a fee) in May each year, in which universities will award credit for high scores. See the Counseling Office for more details. Typical cost has been around $100 per exam ($5 if on free/reduced lunch).
You can learn more about AP courses at the College Board AP Central: https://apcentral.collegeboard.org/