This document proposes a mixed methods study to develop a framework for teaching effectiveness in public schools. It aims to (1) describe and analyze factors that influence effective teaching practices through observations, appraisals, field notes and perceptions; (2) explore how classroom practices vary across school contexts, career phases and ages; (3) analyze relationships between classroom practices and student needs, school context, teacher career and age; and (4) provide implications for stakeholders. The study will use surveys, interviews, and classroom observations to understand influences on teaching effectiveness. Results will inform educational leaders and improve teaching quality.