Long-term effects of four preschool programs: ninth- and tenth-grade results.

Follow-up of achievement test and IQ data on low-income black youths who had participated for 1 year in Bereiter-Engelmann, DARCEE, Montessori, or Traditional prekindergarten was continued through ninth and tenth grades. Stable trends persisted. Montessori males and DARCEE females were high; Montessori males were performing at about grade level on reading and math; IQs parallelled achievement test results. Additional tests of fluid intelligence, task persistence, self-esteem, divergent thinking, task approach, and aspirations and expectations were administered in ninth and tenth grades. Results from program comparisons and factor analyses were consistent with those on IQ and school achievement. The possibility of relationships between techniques used in the different preschool programs and sex differences in children's developmental level was discussed.