Evaluation is a key component to learning about the effectiveness of a program. This article provides descriptive statistics of the newly developed National 4-H Common Measures (science, healthy living, citizenship, and youth development) based on data from 721 California 4-H youth. The measures were evaluated for their reliability and validity of individual items and overall measures using exploratory factor analysis. The measures overall appear to assess what they are intended to assess, but there are several methodological issues, such as cross-loading items and low variance. Recommendations for scale refinement and modifications are made
