Winter Trimester 2009-10 (November 17 - February 26) This trimester, one section of Economics and one section of Statistics are offered. Each is a prerequisite for the corresponding AP course. If you have any questions or concerns or need tutorial, stop by Room 317. IMPORTANT DATES: Thanksgiving Break: November 26 & 27 Christmas Break: December 19 to January 3 Junior Commitment Ceremony: Janaury 8