This study describes the measurement properties of two curated surveys, consisting of previously developed scales, assessing student perceptions of their social-emotional competencies (SEC) and the school culture/climate (CC). The surveys were administered through the Transforming Education/NewSchools Venture Fund partnership that worked with the NewSchools Invent Cohort, a network of 23 schools across 11 states, to expand the definition of student success. The analytic sample for this study includes more than 3,000 students in grades 4 through 12 at 18 schools surveyed in the 2016-17 school year. Using classical test theory as our conceptual and analytic lens, we conducted tests of internal consistency, item discrimination, omit rates, differential item functioning, and exploratory and confirmatory factor analysis. Our findings provide initial evidence of the validity of the survey scores for measuring student perceptions of their SEC and the school CC in the NewSchools Invent schools, suggesting that the surveys are suitable for school and cohort-level decision-making related to students' social emotional competencies and experiences within the school. [Written with Education Analytics.]