The purpose of this study was to determine the relationship between the Qualitative Measures of Teaching Performance Scale (QMTPS; Rink & Werner, 1989) and teacher effectiveness in producing student achievement. The QMTPS focuses primarily on variables related to teacher clarity and task presentation. Nine middle school generalist (classroom) teachers were asked to teach the volleyball forearm pass and serve over eight lessons as part of their normal curriculum. Students were pre- and posttested on the serve and forearm pass using the American Alliance for Health, Physical Education and Recreation (1969) volleyball tests. All lessons were videotaped and were coded using the QMTPS instrument. The relationship between the QMTPS total score and student achievement was significant for the forearm pass and for the serve. The authors concluded that the QMTPS was a valid measure of teacher effectiveness when the total QMTPS score for several lessons was used.