The Student Leadership Competencies Inventory consists of eight scales, each corresponding to its relevant leadership construct within the Student Leadership Competencies framework (Seemiller, 2013). Due to the increasing use of the framework and associated inventory in leadership development programs in higher education, we conducted a thorough analysis of the psychometric properties within each scale. Specifically, using a national dataset of university student responses, we analyzed internal reliability statistics, and conducted exploratory factor analysis with varimax rotation and maximum likelihood confirmatory factor analysis for each of the eight scales. Our results suggested that all scales, overall, possess sufficient strength to be considered valid measures of the leadership constructs within the Inventory, with some notably high co-variances between certain sub-scale factors in several scales.