New data from the U.S. Department of Education show that students at 82 percent of high schools in the United States are enrolled in dual credit courses. The report, which is based on 2010-11 and comes from the department's National Center for Education Statistics at the Institute of Education Sciences, also found that 69 percent of high schools reported enrollments in Advanced Placement (AP) or International Baccalaureate (IB) courses. The data include information on whether high school instructors taught the courses by themselves, and who covered expenses for the courses.