Previous studies have found that different trajectories of conflicted relationships with teachers predicted academic underachievement. However, little is known about what places children at risk of atypical conflict trajectories. This follow-up study examines whether African American ethnicity, IQ, and socioeconomic status (SES) are unique…

The authors identified trajectories of teacher-child relationship conflict and closeness from Grades 1 to 6, and associations between these trajectories and externalizing and internalizing behaviors at 11 years old among low-income, urban boys (N = 262). There were three main findings. Nagin cluster analyses indicated five trajectories for…

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.…