Use this publication to explain to everyone in your organization why the best way to evaluate teaching performance is to use a balanced approach that includes multiple measures. Drawing from research conducted by the Bill & Melinda Gates Foundation and the experiences of nearly 3,000 teachers across the United States, the authors Explain why it's critical to measure effective teaching, ensure high-quality data, and invest in improvement. Describe multiple ways to identify effective teaching and provide teachers with actionable, reliable information they can trust to continuously improve their performance. Provide ideas for getting started with multiple measures at the school and district levels.