Student Teams-Achievement Divisions has strong evidence of effectiveness in primary schools. Across four qualifying studies included in this review the mean effect size was +0.30.
Student Teams-Achievement Divisions has strong evidence of effectiveness in secondary schools. Across four qualifying studies, three of which used random assignment to conditions, the weighted mean effect size was +0.42.
About Student Teams-Achievement Divisions
Student Teams-Achievement Divisions (STAD) is a co-operative learning programme in which pupils work in four member heterogeneous teams to help each other master academic content. Teachers using STAD follow a schedule of teaching, team work, and individual assessment. The teams receive certificates and other recognition based on the average scores of all team members on weekly quizzes. This team recognition and individual accountability are essential for positive effects of co-operative learning.