Researchers analyzed data collected from elementary school students (N = 893) to further establish the psychometric soundness of the My Class Inventory--Short Form Revised (MCI-SFR). A confirmatory factor analysis was conducted resulting in a good fit for a four-factor model, which corresponds to the instrument's four scales (Cohesion, Competitiveness, Friction, Satisfaction). Findings confirm the MCI-SFR as both a reliable and valid measure for assessing students' perceptions of their classroom climate.