This fact sheet uses data from the 2017–18 Civil Rights Data Collection (CRDC) to explore information about dual enrollment and Advanced Placement (AP) exam participation for students enrolled in grades nine to 12. This fact sheet is a complement to an August 2021 fact sheet that covered AP and IB course-taking using the same CRDC data. The CRDC is a biennial survey administered by the U.S. Department of Education’s Office for Civil Rights. Credits earned through dual enrollment courses and/or AP exams may reduce students’ postsecondary course load or shorten their time to earn a degree. Dual enrollment/dual credit programs provide opportunities for high school students to take college-level courses and earn concurrent credit toward a high school diploma and a college degree. Only schools that serve students in grades nine through 12 offer dual enrollment courses, and not all such schools do offer them. However, a majority of students in grades nine through 12 (75%) attend a school that offers dual-enrollment options.