A replication of a previous study, this research was concerned with determining those characteristics of ninth grade girls which are predictive of high school curriculum selection and of success in a chosen curriculum. Composing the sample for this part of the longitudinal study were 362 girls enrolled in one of Altoona Senior High School's five curriculums. Data were collected when the students were enrolled in the ninth grade and again at the end of the tenth grade. Nine ability measures and seven occupational values which were selected by Kapes in a study carried out as an earlier part of the longitudinal were used as the variables in this study. Verbal and numerical aptitudes, attitudes toward salary, vocational maturity, and father's education were found to be significant predictors of grade point averages in the academic curriculum while verbal and numerical aptitudes, interest and satisfaction, and vocational maturity were predictors of the vocational grade point average. A review of related literature focused on career development theory as well as on the previous eight studies in this ongoing research, the Vocational Development Study, a 10-year project from three Pennsylvania school systems. (SN)