The Toolbox Revisited is a data essay that follows a nationally representative cohort of students from high school into postsecondary education, and asks what aspects of their formal schooling contribute to completing a bachelor's degree by their mid-20s. The universe of students is confined to those who attended a four-year college at any time, thus including students who started out in other types of institutions, particularly community colleges. The core question is not about basic "access" to higher education. It is not about persistence to the second term or the second year following postsecondary entry. It is about completion of academic credentials--the culmination of opportunity, guidance, choice, effort, and commitment. Appended are: (1) Changes in Demography, Geo-Demography, and Postsecondary Entry from the High School & Beyond/Sophomores to the NELS:88/2000; (2) Principal Features of the NCES Grade-cohort Longitudinal Studies; (3) Differences Between the