In this paper we will present our experiences in measuring the impact of an out-of-school-time program on young children in grades k-4. In the aftermath of Hurricanes Katrina and Rita, an out-of-school-time program, known as 'Houston's Kids' (or HK), was developed and implemented to help meet the needs of disadvantaged children and youth in a single community. The outcomes evaluation that was designed to assess HK examined changes in conduct, reading scores, school attendance, developmental assets, and values (see www.SearchInstitute.org) among the approximately 120 program participants in grades k-4. True panels of data that tracked changes in the same individual participants over a school year were employed as were data on a sample of control or 'comparison subjects.' Measuring program impacts among young children is notoriously difficult, which led us to devise some unconventional measures and to utilize various measurement models (e.g. Rasch Models; Wiggins Models).#QualitativeMethods #QuantitativeMethods-TheoryandDesign #Prek-12EducationalEvaluation #2012Conference #MixedMethodsEvaluation