First grade disadvantaged children were separated into classes by sex and taught by a teacher of the same sex. It was hypothesized that (1) single sex classes would score higher on reading and arithmetic tests and show a more positive attitude toward school, teacher, and peers than coeducational classes, and (2) the one all-girls class would score…

THIS SHORT-TERM EVALUATION OF THE MORE EFFECTIVE SCHOOLS (MES) PROGRAM IN 21 NEW YORK CITY PUBLIC ELEMENTARY SCHOOLS ASSESSED THE MES INSTRUCTIONAL PROGRAM AND ITS IMPACT ON THE STUDENTS. DATA WERE GATHERED FROM (1) OBSERVATIONAL VISITS TO CLASSROOMS BY TWO-MEMBER TEAMS OF EDUCATORS AND SOCIAL SCIENTISTS, (2) STRUCTURED INTERVIEWS WITH…