This report provides the evidentiary basis for the Praxis Performance Assessment for Teachers (PPAT), a licensure examination developed by the Educational Testing Service. The PPAT requires candidates to submit evidence on four main tasks organized in relation to the instructional cycle, from planning through enactment to reflection and follow up. Scoring rubrics are employed by raters to evaluate performances on each task and this report supplies the research evidence and argument in support of the scoring rubrics and of the approach to assessment provided by the PPAT.