High school counselors potentially hold a key position to help increase the number of U.S. students receiving post-secondary degrees, particularly to address inequalities that prevent certain students from successfully transitioning to college. Using the model of student success (Perna & Thomas, 2008), this study reviewed the literature to understand how various contexts (social, school, family, student) shape high school counselor interactions with students as they work to improve post-secondary outcomes of college access and enrollment.