Accurate, reliable, and scalable measurement of classroom quality represent a critical tool for ensuring that young children benefit from early learning programs. The Early Childhood Classroom Observation (ECCO) study was designed to better understand how video recordings can support high-quality measurement of pre-kindergarten (pre-K) classrooms,…

Research Findings: Given the variable nature of early childhood settings, practitioners and researchers need better guidance on what conditions influence observations conducted within early childhood settings (National Research Council, 2008). Using 230 observations from 23 three- and four-year-old children, we conducted a Generalizability study…