High School and Beyond is a national longitudinal study of the cohorts of 1980 seniors and sophomores in the United States, intended to provide information on these students through early adulthood. This base year student file, a machine-readable data file (MDRF), is the first information available from the study. It includes information on 58,270…

The Twins and Siblings study is available in a machine-readable data file that is part of the High School and Beyond (HSB) Class of 1980 Survey, administered in 1980 to a national sample of over 30,000 sophomores and 28,000 seniors from 1,015 high schools throughout the United States. This file contains data from 616 sampled twins and triplets…