Brown, A. L., & Lee, J. (2014). School performance in elementary, middle, and high school: A comparison of children based on HIPPY participation during the preschool years. School Community Journal, 24(2), 83–106.
            Study design characteristics contributing to rating
          
          | Design | Random assignment compromised? | Attrition | Baseline equivalence | Confounding factors? | Valid, reliable measures? | 
|---|---|---|---|---|---|
| Non-experimental comparison group design | Not applicable | Not applicable | 
           Not established on race/ethnicity and socioeconomic status in the analyzed sample; outcomes not feasible to assess at baseline  | 
                                                                                                              
           None  | 
                                                                                                              Not assessed in manuscripts reviewed under Handbook of Procedures and Standards, Version 1 |