Research Findings: The aim of this study was to provide an initial investigation into the psychometric properties of the Problems in Classroom Engagement Scale (PCES). The PCES was designed and tested for district-wide use as part of the report card system for a large urban school district. The PCES was administered to all 1st-, 2nd-, and 3rd-grade students in the district. Factor analytic examination revealed a bifactor structure as the best fit to the data. The bifactor structure reflected a general factor of Problems in Behavioral Engagement and two group factors: Problems in Social Engagement and Problems in Academic Engagement. These factors were found to be reliable within and across grades and demonstrated convergent and divergent relations with academic and behavioral outcomes. Practice or Policy: Findings provide initial evidence to support the routine use of the PCES in a large urban setting. The use of the PCES can help in fostering district-wide attention to students' early difficulties with behavioral, social, and academic engagement.