PBLWorks, the leading provider of professional development for Project Based Learning (PBL), has partnered with the College Board to offer a new PBL-based professional development program for Advanced Placement (AP) courses in Environmental Science and U.S Government and Politics. The new courses use a Project Based Learning method of teaching and are based on powerful new breakthrough research just released by the Center for Economic and Social Research at the USC Dornsife College of Letters, Arts and Sciences, that found PBL coupled with high-quality professional development significantly improves student performance when compared to students in non-PBL classrooms.