METX Collection

METX Collection Snapshot

Dates: 2011-12, 2012-13 Academic Years
Education Setting: Elementary and Secondary, Grades 4-9
Subject: Mathematics, English Language Arts
Collection Contents: 15,000 Classroom Sessions + Artifacts | 500 Sessions available October 2013

Collection Overview

The Measures of Effective Teaching Extension (METX) Collection includes classroom footage and scanned lesson artifacts captured during the 2011-2012 and 2012-2013 academic years. The METX project enlisted more than 350 teacher volunteers from six school districts, collecting video and other artifacts of everyday classroom activities that document thousands of lessons. This was a large-scale effort to create a rich resource for educators and researchers that will contribute to the improvement of teaching and learning. The recorded lessons in the METX collection include a variety of English Language Arts and Mathematics classroom topics as well as a range of lessons and activities. Many of the videos have been tagged using a tag scheme based on the Common Core State Standards and the TeachingWorks High Leverage Practices. The collection also includes an array of lesson artifacts—teacher lesson plans, worksheets and handouts, homework assignments, and images of board work.

METX partner, Westat, worked with teachers in the field to collect the classroom video and lesson artifacts. The raw videos and paper documents submitted by teachers were processed by Westat and then delivered to the University of Michigan. The videos were recorded using a custom rig that allows two small consumer cameras to record the lesson from different angles and to capture both teacher and student voices using two small microphones. Westat also worked with teacher education institutions across the country to coordinate and support efforts to apply the tags that have been developed for the project. The METX materials are made available to researchers through the ICPSR MET Longitudinal Database and to a variety of education professionals through the BCDA.


The METX collection is an extension of the Measures of Effective Teaching (MET) Project that was launched in 2009 by the Bill and Melinda Gates Foundation. The original MET project aimed to develop and test multiple measures of teacher effectiveness in order to identify and promote great teaching. The MET project examined classroom observations (using video), student surveys, tests of teachers’ pedagogical content knowledge, and analyses of student assessment data to track achievement gains over time. One aim of this analysis was to provide tailored feedback for teachers to improve their practice and to serve as the basis for more targeted professional development.

This first MET project, which ran during the 2009-10 and 2010-11 academic years, involved close to 3,000 teacher volunteers from 317 schools across six, predominantly urban, school districts including: Charlotte-Mecklenburg Schools, Dallas Independent School District, Denver Public Schools, Hillsborough County Public Schools, Memphis City Schools, and the New York City Department of Education. The final report on this work was released in January 2013. The video and quantitative data from the initial MET project is available to researchers through ICPSR MET Longitudinal Database using secure online systems.

During the initial phase of the MET project, teachers, teacher educators, school administrators, and others expressed a strong interest in having access to the types of video and other classroom artifacts collected by the project. Toward that end, the MET Extension (METX) project was conceived and launched to create a rich resource for broad use among education professionals—to create a “Library of Practice” that can be drawn upon to improve teaching and learning in diverse ways.

Contributing Partners