For report – NCEE 2010-4022rev Effects of Problem Based Economics on High School Economics Instruction http://ies.ed.gov/ncee/edlabs/projects/project.asp?ProjectID=89

This file contains data from a randomized control trial in two Western states that examined the effects of a problem based high school curriculum on students' proficiency in economics. The study found a significant positive impact for students of teachers who received receive professional development and support in Problem Based Economics compared with their peers. The final analytic sample used for examining the primary research questions included 4,350 students from 64 teachers (2,502 students from 35 intervention teachers and 1,848 students from 29 control teachers). Eighty-eight percent of students with valid posttest measures were enrolled in grade 12; the remaining 12 percent were in grade 11.