To support and enhance educational attainment in the United States, the Lumina Foundation established a national goal of 60% of adults earning a high-quality credential by 2025. To achieve this goal, the Lumina Foundation expanded its funding to the adult learner population in 2017 by establishing the Adult Promise Initiative. The organization recognizes and values diversity, equity, and inclusion in its work and understands how minority-serving institutions, such as Historically Black Colleges and Universities (HBCUs), are integral to the proliferation of Black adult learners. Recognizing the tremendous impact HBCUs have on the educational attainment of Black Adult Learners, we must identify their curricular and co-curricular best practices that are critical to the academic success of this population. This report will provide an overview of these best practices for faculty, staff, and students of the five HBCUs participating in the Lumina Adult Learner Initiative grant. The organization of this report will include a brief review of the Adult Learner Initiative grant and its components, followed by the best practices frequently discussed among faculty, staff, and students participating in the grant and recommendations. The authors will then review Lumina's philanthropic approach to the grant. Lastly, how staff and administrators define capacity-building for the adult learner population will be examined.