Presentation Abstract: This presentation shares the results of an evaluation of “dose-response relationships” in an out-of-school-time program. That is, it will report findings on how much program participation (or “dose”) was necessary to produce what kind of results (or “response”) among children and youth program participants. In the aftermath of Hurricanes Katrina and Rita, an out-of-school-time, collaborative program, known as “Houston's Kids” (or HK), was developed and implemented with the intention of addressing the needs of displaced and other at-risk children and youth in a single community. The outcomes evaluation that was designed to assess HK examined changes in developmental assets and values (www.SearchInstitute.org) in relation to differential program participation among the approximately 600 individual kindergarten through high school children/youth program participants. 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.#2012Conference #QuantitativeMethods-TheoryandDesign #Prek-12EducationalEvaluation #MixedMethodsEvaluation