[1] The founder of the Whitby School, Rambusch served as a leading proponent of Montessori education in the United States, writing and lecturing widely.
[2] Rambusch was born in Milwaukee, Wisconsin, on April 29, 1927, to parents Kathleen Wright, a schoolteacher, and Thomas McCormick, an ophthalmologist.
She earned a Master of Arts degree in early childhood education from Teachers College, Columbia University in 1963.
[3] She worked for the New York Foundling and Mount Vernon City School District in the 1960s, headed the Caedmon School in Manhattan in the 1970s, taught at Tufts University, held a fellowship at Yale University from 1984 to 1986, and oversaw early childhood education at New York City's Agency of Child Development from 1985 to 1987.
[3] Rambusch's papers are included in the American Montessori Society records, which are held at the University of Connecticut's Archives and Special Collections.