Examines achievement in individually competitive and cooperatively reward-structured environments during a seven-week class period. Reports no differences between the two treatment groups at posttest. (Author/YP)

Reports on a study which examined the relationship of classroom environment to attitudes toward science and achievement in science among tenth grade biology students. Results indicated that student attitude toward the classroom environment was a signficicant predictor of the student attitude toward science. (TW)

Describes a study designed to explore sources of influence on the judgements made by science teachers related to school characteristics, classroom features, and properties of a science curriculum. Results suggest that teachers' judgments center around concern for student ability and interest, teaching methods, and school spirit and morale. (TW)