Dual enrollment, in which high school students enroll in a college-level course and potentially earn college credit, is widespread. Ninety-eight percent of public 2-year institutions had high school students enrolled in college courses during the 2002-2003 academic year.

For more information, see:

Accelerating Student Success through Credit-Based Transition Programs

Dual enrollment of high school students at postsecondary institutions, 2002-2003 (NCES, 2005)

http://www.nces.ed.gov/pubs2005/2005008.pdf

Dual credit and exam-based courses at US public high schools, 2002-2003 (NCES, 2005)

http://www.nces.ed.gov/pubs2005/2005009.pdf