Advanced Placement class. See the College Board's website about
this at http://www.collegeboard.org/ap/.
From that page:
"AP gives students an opportunity to take college-level courses and exams while
still in high school. There are 33 courses in 19 subject areas, offered by 13,000
secondary schools around the world."
The opinions and statements expressed on this page
are those of parents who belong to the
UC Berkeley Parents Network and
should not be taken as a position of or endorsement by the
University of California, Berkeley.