Factors affecting access to postsecondary education for college-age youth were studied, with emphasis on personal characteristics and institutional policies that influence educational aspirations and postsecondary enrollments. Data were primarily derived from two databases: the High School and Beyond Study and the National Longitudinal Study of the High School Class of 1972. Using data from 1980 and 1972, high school seniors' educational expectations were examined to determine the influence on attendance of their racial/ethnic background, gender, socioeconomic status, family income, academic performance, and geographic location. The types of colleges selected by students and students' personal characteristics were compared, and factors influencing full-time and part-time attendance and academic fields chosen by students were assessed. Student use of four sources of financing was reported: grants (including scholarships), loans, assistance from relatives, and their own funds. Data for specific aid programs are included. (SW)