This grant provides partial support for a two-year initiative by the National Academies’ Board on Higher Education and Workforce to produce a thoroughly-researched consensus study on effective mentoring practices and the role these practices play in improving student persistence and expanding diversity and inclusion. Examining both undergraduate and graduate mentoring programs, the study aims to identify areas for future empirical research and to evaluate the impact of varied mentoring programs in STEMM (STEM+Medicine). A parallel effort will develop an online, interactive resource guide so that institutions, departments, individual faculty, and student development professionals will be able to access fully-vetted materials and resources on mentoring and customize them for their own use. Plans are to convene a study committee of 8-12 members; hold two-to-four in-person committee meetings and four-to-five virtual committee meetings; complete a critical review of the literature; organize workshops and stakeholder engagement activities; publish the committee report; develop, test, and launch the interactive online resource; and assess the project’s uptake and impact.