The purpose of this study was to evaluate the structural validity, internal consistency, and measurement invariance of scores from the "Social, Academic, and Emotional Behavior Risk Screener--Student Rating Scale" (mySAEBRS), a student self-report universal screening tool. Participants included 24,094 K-12 students who completed the mySAEBRS. Confirmatory factor analyses (CFAs) supported the fit of a bifactor model, wherein each item corresponding to both a general factor (i.e., Total Behavior) and one of three narrow factors (i.e., Social Behavior, Academic Behavior, and Emotional Behavior). Such model fit was superior to that of alternative factor structures (i.e., unidimensional, correlated-factor, and higher order). A review of pattern coefficients suggested items were relatively split, with some items loading higher on the general factor and others loading higher on their narrow factor. A series of multigroup CFAs supported the configural and metric invariance of the bifactor model, while yielding less consistent support for scalar/threshold invariance. Omega reliability coefficients indicated each mySAEBRS scale was associated with acceptable internal consistency (>0.70). However, when accounting for other factors, only the Total Behavior, Social Behavior, and Emotional Behavior scales demonstrated acceptable internal consistency (i.e., >0.50). Implications for practice and directions for future research are discussed.