In the largest study of instructional practice ever undertaken, the Bill & Melinda Gates Foundation's Measures of Effective Teaching (MET) project is searching for tools to save the world from perfunctory teacher evaluations. The first report (released in December 2010) described the potential usefulness of student surveys for providing feedback to teachers. The second report, the Educational Testing Service (ETS) scored 7,500 lesson videos for 1,333 teachers in six school districts using five different classroom-observation instruments. The report compared those data against student achievement gains on state tests, gains on supplemental tests, and surveys from more than 44,500 students. So far, the evidence reveals that choosing a team of superheroes makes sense for teacher evaluation systems as well: rather than rely on any single indicator, schools should try to see effective teaching from multiple angles. (Contains 1 figure.)