Using National Student Clearinghouse (NSC) data, this report presents national and state-by-state findings on the postsecondary enrollment and completion outcomes of high school students who began taking dual enrollment (DE) college courses in fall 2015, tracked for four years after high school. This report describes the size and significance of the DE population for postsecondary institutions and states and compare postsecondary outcomes among dual enrollees to outcomes of other recent high school graduates entering higher education without prior DE experience. Given previous research indicating that low-income, Black, and Hispanic high school students are severely underrepresented in DE coursework, the authors further disaggregate results for these subgroups to highlight the potential for DE to strengthen high-school-to-college-and-career transitions and increase equity for underserved communities. Students who took DE courses in high school enrolled in college at rates well above the national average for high school graduates and had higher award completion rates compared to recent high school graduates without prior DE.