Student Team Achievement Division (STAD) is a cooperative-learning strategy in which small groups of learners
with different levels of ability work together to accomplish a shared learning goal. This study was conducted to have
empirical evidence about the effectiveness of STAD in Mathematics classroom at Secondary level. 10th class students
equally divided into two sections on the basis of teacher-made pretest scores were taken as sample of the study.
Data analysis revealed that both the experimental (N=28) and the control groups (N=25) were almost equal in
mathematical base at the beginning of the experiment. The classroom observation indicated that the students of
experimental group were engaged in learning at a higher level as compared to the counterpart students of control
group. Furthermore, the experimental group outscored significantly the control group on posttest showing the obvious
supremacy of cooperative learning over traditional method of teaching. On retention test, again the experimental group
was a little bit superior in achievement but there was no significant difference between the mean scores of the
experimental and the control groups. Hence, ultimate result of the study indicated that STAD (Student Team
Achievement Division) was more effective instructional paradigm for mathematics as compared to the traditional method
of teaching. Due to its provision for higher learning engagement, it proved to be an active learning strategy.