Preschool-8th grade, Montessori Public Charter School The Mark Ross Montessori Foundation (MRMF) is a non-profit 501(c)(3) entity that exists to support Ross Montessori School. The mission of MRMF is to provide financial support to the Ross Montessori School and to help the school achieve its vision. Through the Annual Fund, Capital Campaign, fundraising events, and grant writing, the Foundation will grant money to the school to augment educational programs. The Mark Ross Montessori Foundation (MRMF) is a separate entity from the Ross Montessori Board of Directors and was established in 2005. The MRMF Board of Directors meets quarterly to discuss fundraising and related financial issues.