Drawing on a nationally representative sample of high school seniors from the Educational Longitudinal Survey of 2002 (ELS), this study examines the influence of the high school socioeconomic context on students' decisions to attend two-and four-year postsecondary institutions. The results provide evidence of resource imbalances based on socioeconomic differences among high schools, and that the high school socioeconomic context moderates the ways in which resources influence college enrollment propensities at both the individual and school level. The study concludes with implications for researchers and policymakers.