Rebecca Lubetkin was born in 1938. She grew up in Kenilworth and Millburn, New Jersey. She received her B.A. at Barnard College in 1960 and master's degree in political science at Rutgers in 1961, after which she worked as a political science instructor at the Eagleton Institute of Politics until 1964. In 1975, Lubetkin returned to Rutgers, where she founded and directed the Training Institute for Sex Desegregation of the Public Schools, which later became known as the Consortium for Educational Equity. Lubetkin and her staff developed training programs to assist schools in implementing gender equity in accordance with Title IX and New Jersey statutes. From 1993 to 2000, she also served as the associate director of equity of the Rutgers Center for Mathematics, Science and Computer Education. Lubetkin is a Professor Emerita at Rutgers University.
In 1971, she became active in the National Organization for Women (NOW). She was a member of the Essex County and Morris County Chapters of NOW. In 1995, she served as a delegate to the Fourth World Conference on Women in Beijing. She hosted New Directions for Women, a television program produced by Morris County NOW. She co-chairs the Holocaust Council of Greater MetroWest and serves as a national board member of the Veteran Feminists of America. Lubetkin is featured in Feminists Who Changed America, edited by Barbara Love. She and her husband have two daughters.