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Gates Foundation MET Report: Teacher Observation Less Reliable Than Test Scores

“Effective teaching can be measured,” the authors wrote in the latest installment. They’re sure of it because they used a randomized experiment to figure it out. Reliable teacher evaluations, the paper claims, include “balanced” proportions of teacher observation, students’ standardized test scores and student surveys. And for the first time, the randomized trial shows that teachers who perform well with one group of students, on average, perform at the same levels with different groups of kids.