The Dual Credit and Exam-Based Courses, 2010-11 (FRSS 104), is a study that is part of the Fast Response Survey System (FRSS) program; program data is available since 1998-99 at https://nces.ed.gov/surveys/frss/downloads.asp. FRSS 104 is a study that provides nationally representative data on prevalence and enrollment of dual credit and exam-based courses in public high schools. The study was conducted using paper surveys, telephones, and email. In this study school personnel were sampled. The unweighted survey response rate was 91 percent and the weighted response rate using the initial base weights was also 91 percent. Key statistics produced from FRSS 104 were whether students could earn both high school and postsecondary credits for the same courses, and if so, the total number of enrollments in these courses and the methods of implementation (distance education, at school or at college campus and by high school instructor or postsecondary instructor).