This paper provides a program evaluation model, along with field-testing results, that was developed in response to the need for an evaluation model able to support systematic evaluation of teaching and learning centers (CTLs). The model builds upon the author's previous studies investigating the evaluation practices and struggles experienced at 53 CTLs. Findings from these studies attribute evaluation struggles to contextual issues involving evaluation capacity, ill-structured curricula, and ill-conceived evaluation frameworks. This field-tested Four-Phase Program Evaluation Model addresses these issues by approaching evaluation in a comprehensive manner that includes an evaluation capacity analysis, curricular conceptualization, evaluation planning, and plan implementation.