The second INCLUDES Summit, held in Alexandria, Virginia, on April 24-25, 2018, brought together institutional leaders and context experts from various institutions and organizations to participate in the INCLUDES initiative on broadening the participation of women and underrepresented minorities within STEM faculty and student bodies. This second summit, made up of researchers, administrators, and policymakers, focused on the exchange of campus program experiences, insights and successes from Diversity initiatives, strengthening cross-institutional relationships, and developing guiding principles and articulated speaking points to drive the case for diversity and inclusion in STEM faculty hiring and student recruitment. In sum, 83 registrants from over 50 institutions and 15 partner organizations were represented at the summit. The report includes survey results, next steps for participants, and a list of 2018 INCLUDES Summit registrees. [For "2017 APLU INCLUDES Summit Report," see ED617036.]