This takes the work of many people in many ways including (but not limited to) students, faculty, administrators, staff, parents, and alumni. The most recent Strategic Plan, adopted by the Board of Trustees in June 2009, states that:
"MA’s culture and community are defined by progressive thought and action, intellectual curiosity, respect for individual differences, styles, and contributions, close relationships among educators and students, and the encouragement of professional development for adults. We are deeply committed to multiculturalism, which is inextricably linked to a diversity of race, ethnicity, sexual orientation, thought, socio-economic circumstances, learning styles, and religious belief. We believe that Marin Academy is part of a larger community, beginning with our neighbors and expanding to include the global community. Strong relationships that endure beyond a student’s time at MA are critical to the School’s mission and sustainability as an institution."