Dual credit instruction allows academically prepared high school students to simultaneously earn credits that count toward a high school diploma and a college degree. Dual credit instruction delivers a "win-win" arrangement for all parties: students gain access to challenging college-level coursework to make their junior and senior years of high school more productive; students can prove to others and themselves that they have the ability to succeed in college; college costs can be reduced for parents and students; time to degree at college can be shortened; and the enhanced high school and college faculty dialogue can contribute to a better alignment between secondary and postsecondary education. Consequently, as dual credit instruction has a positive impact on postsecondary completion, there is a growing emphasis among policy makers on the value of dual credit enrollment for all students and especially those who are traditionally underserved in higher education. Data for this report derive from the Illinois Community College Board's (ICCB) Centralized Data System and, specifically, the Annual Student Enrollment and Completion (A1) student-level submission (Appendix A Tables) and Annual Course Data (AC) student-level submission (Appendix B Tables) from Illinois community colleges. This report includes: (1) Dual Credit Definition and Legislative Background; (2) Characteristics of Dual Credit Students; (3) Dual Credit Course Count and Enrollment; and (4) Dual Credit Student Outcomes.