Relationships between cognitive and affective learner characteristics or "aptitudes" and mathematics achievement for sixth-graders in three instructional treatments in one school district were examined. Aptitude-treatment interaction (ATI) analyses were performed to test for differential prediction of achievement outcomes among treatments, using…

Four research papers on temperament and school learning and two commentaries are presented. "Early Temperament and Later Educational Outcomes," by Jacqueline V. Lerner, Stella Chess, and Kathleen Lenerz, discusses temperament characteristics and academic attainment. One hundred thirty-three middle class subjects were studied from early infancy…

Two fifth grade classrooms representing the extremes of classrooms where students perceived high and low differential teacher treatment were studied to obtain a more in-depth picture of the nature of classrooms that are expected to have contrasting effects on students' expectations and self-evaluations, and to begin to explore a model of classroom…

Two studies are described which capitalize on the strengths of the instructional development process for research purposes. Typically, developed courses have carefully-designed learning environment specifications, replicable instructional treatments, and well-proven achievement measures. A battery of questionnaires and rating scales concerning…

Reviews the determinants and selected consequences of academic sorting practices. Concludes that tracking and ability grouping disproportionately affects Black and low-income students by stereotyping them as less intelligent and less able to achieve, which in turn creates low teacher expectations. (FMW)

In this age of greater accountability, local school districts within the USA increasingly use summer school programs as an intervention service to provide students who have failed to meet classroom, district, or state performance requirements with the opportunity to "catch up." Although such programs attempt to provide varying types of…