This Data Point uses data from the High School Longitudinal Study of 2009 (HSLS:09), a nationally representative, longitudinal study of more than 23,000 ninth-graders in 2009, to examine the association between the timing of Algebra I coursetaking and enrollment in postsecondary education. HSLS:09 cohort members were asked when they last took Algebra I and whether they had enrolled in a postsecondary institution by February 2016 in the spring of 2016, when most of them were 3 years beyond high school. Readers are cautioned not to draw causal inferences based on the results presented, because the factors that lead to early Algebra I coursetaking could also affect postsecondary enrollment.