From June 2023-July 2025, ICH supported Combined Jewish Philanthropies (CJP) in assessing their Mental Health Initiative (MHI). The initiative was developed using a participatory process with leaders and professionals in the Jewish community in the Greater Boston area. Using a collective action framework, the initiative aims to improve the mental health of the Jewish community through addressing service gaps, education, destigmatization, and training. To evaluate this program, ICH utilized a participatory mixed-methods approach to build understanding of key MHI pilot programs. Evaluation activities included qualitative interviews, quantitative surveys, participatory feedback sessions, and program data tracking and analysis. At the end of the program, ICH synthesized all data and presented findings on both pilot programs to stakeholders, to support the ongoing improvement and development of the initiative. In addition, ICH provided strategic planning support to CJP to create a sustainable structure for decision-making around resource allocation for the MHI.