Reports on a study to extend the concurrent and predictive validity of the Teacher Performance Assessment Instrument by including a sample of middle school science teachers. The validity criteria for the study involved observing student engagement and integrated process skill achievement. (TW)

Students from 15 intact classes in grades 6 and 7 (N=142) from suburban schools in Perth, Australia, were used to investigate their time on task and achievement in process-oriented lessons. One finding noted is a positive relationship between achievement and student reasoning ability and engagement in planning and collecting tasks. (JN)