Nonprofit capacity building programs and program activities positively influence perceived organizational effectiveness. Being able to link nonprofit capacity building to organizational effectiveness is a paramount concern for both nonprofits seeking capacity building programming and those entities, be it foundations or government that fund capacity building initiatives and programs. Therefore being able to link nonprofit capacity building to organizational effectiveness and higher performance is crucial to ensure that both nonprofit organizations and funders continue to pursue and support capacity building programming. Through an examination of the developing hollow state and the resulting nonprofit capacity disparity this study demonstrates the purposeful need for the continuation of nonprofit capacity building programming and the support of such programming through outside private foundation and government funding. Using a conceptual model developed from the literature on organizational learning and change this study examines the impact of capacity building programming, programming activities, organizational learning theory and perceived organizational effectiveness. The influence of the type of capacity building programming, i.e. traditional workshop and traditional workshop plus technical and financial assistance is investigated through the use of quantitative and qualitative methods. Specifically the quantitative methods utilized were descriptive including bi-variate correlation analysis, paired and independent T-tests, ANOVA and multiple regression. The qualitative analysis including examining open-ended survey question responses from two pre-post capacity building intervention surveys and one post program survey and the analysis of comments made in 10 focus groups. The influence of capacity building programming iv activities, i.e. organizational development, organizational program development, organizational collaboration and organizational leadership is investigated through the use of multiple regression and qualitative analysis. This study uses pre-, post-test survey data from a total of 43 nonprofit organizations that participated in the Strengthening Communities Fund in Central Florida Program, managed by the Center for Public and Nonprofit Management at the University of Central Florida. The two year program was offered in two identical 10 month cycles. Pre- and post-test data were collected from 23 participant organizations in Cycle 1 and 20 in Cycle 2. This study sought to identify the nonprofit capacity building programming modality and programming activities that contributed most to perceived organizational effectiveness. According to the findings, nonprofit organizations seeking capacity building and funders looking to support capacity building programs should look to programs that offer activities that increase organizational leadership capacity and organizational program development. Increasing organizational leadership capacity and organizational program development contributes most to perceived organizational effectiveness. This study did not find support to recommend one particular capacity building training modality over another. Regardless of the method of capacity building program delivery, i.e. workshop and/or technical and financial assistance, programs which build organizational leadership capacity and organizational program development will greatly influence the perceived organizational effectiveness of the capacity building participant organizations.