The gold standard in making causal inference on program effects is a randomized trial. Most randomization designs in education randomize classrooms or schools rather than individual students. Such "clustered randomization" designs have one principal drawback: They tend to have limited statistical power or precision. This study aims to…

Some students are less accurately measured by typical reading tests than other students. By asking teachers to identify students whose performance on state reading tests would likely underestimate their reading skills, this study sought to learn about characteristics of less accurately measured students while also evaluating how well teachers can…