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Validation Engine for Observational Protocols
The Bill & Melinda Gates Foundation introduced the Measures of Effective Teaching (MET) project to develop and test multiple measures of teacher effectiveness. This document explores the overarching purpose and functionality of a validation engine, which was designed to help districts determine if their observation protocols routinely assign the highest ratings to teachers whose students grew the most, in terms of academic performance, and the lowest ratings to teachers whose students grew the least.
Discover how the Early Learning Stories for Impact initiative is helping communities turn evidence-based pre-K curriculum and assessments into joyful, effective learning tailored to local needs.
Discover what decades of research and classroom experience reveal about how purposeful play, connected curricula, and well-supported teachers can give every young child a high-quality start.
Discover how better, play-based assessments can help early educators see children’s growth sooner and ensure every young learner gets the support they need to thrive.
Oct 07, 2026
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