Teachers are in the perfect position to be an influential source of help to students with life and academic circumstances that inhibit them from staying on the path to graduation, but they often underestimate their role in helping students develop the resilience to do so. Re-engaging students in the learning process who are severely off the…

Background: Cluster-randomized experiments that assign intact groups such as schools or school districts to treatment conditions are increasingly common in educational research. Such experiments are inherently multilevel designs whose sensitivity (statistical power and precision of estimates) depends on the variance decomposition across levels.…