The study is an attempted replication of a 1967 study in which the American College Test (ACT) was administered to a sample consisting of about half the high school seniors in Texas. The ACT battery measures students' developed abilities; in addition, pupil information questionnaires were administered in both years. Although there was a decline in ACT scores between 1967 and 1971, in part reflecting the seniors' changing attitudes toward testing, two firm conclusions are supported by both sets of data: (1) the scores of over half of the Mexican American and black seniors were below the lowest quartile of the Anglo seniors; and (2) the higher the socioeconomic status of the seniors' families, the higher the scores. In addition, a number of comparisons are made from information on the 1967 and 1971 pupil questionnaires; plans to attend college, occupational plans, financial needs, opinions of high school programs, curricular programs, and consideration given to dropping out of school. (SES)