Dumont become an active leader in the Chicago Native American community and was part of the second generation of Native American leaders of the city's
American Indian Center, which had been established by
Willard LaMere and others in 1953, with support from the
American Friends Service Committee. He served on the AIC's education committee with his sister,
Nancy Dumont, as well as
Faith Smith. All three became founding members of the
Native American Committee in 1970, an organization dedicated to creating educational institutions for and by Native Americans, which in due course became independent of the AIC. In 1971, Dumont was coordinator of NAC's first major initiative, the Little Big Horn School, a collaboration with
Chicago Public Schools designed to address needs of Native American high school students. With a federal grant of $244,000, five teachers at the Little Big Horn School taught eighty high school students and twenty preschool students. The NAC followed up the success in 1973 with the O-Wai-Ya-Wa Elementary School program. In 1974, NAC founded the
Native American Educational Services College (NAES College), the first institution of higher learning designed by and for Native Americans. Dumont was part of the committee that drafted the original proposals and curriculum design for a degree-granting institution combining academic and tribal knowledges. In the mid-1970s, as NAES College began to establish satellite locations on Native American reservations, Dumont returned to Montana to set up the NAES site on the
Fort Peck Indian Reservation. He later worked for the Fort Peck Tribal Board. ==Legacy==