In 1949, Alexander was born in Cambridge, Massachusetts. Her parents were Edna and Oscar London. She attended Cambridge High and Latin School, where she was continually elected a class officer. While there, she became the first African American president of the Student Council. She also participated on the track team. She went on to study at Howard University through a scholarship from the Boston NAACP. While in college, she worked as a legislative assistant to Tip O'Neill. She persuaded him to hire her as a legislative aide. Her work as a legislative assistant got her interested in work in justice. She graduated from Howard University in 1969. Afterward, she earned her J.D. from New England Law School in 1972. She also received a grant from the NAACP to take additional classes at New York University on federal jurisdiction and labor law.
Career
Alexander began her legal career in 1972. She became a staff attorney working for the Greater Boston Legal Assistance Project as a Reginald Heber Smith Community Lawyer fellow. After her fellowship, she was legal counsel for many years with the Youth Activities Commission in Boston. She also worked as an assistant professor at Tufts University, teaching urban law and black politics. She served as the chair of President Carter's Massachusetts delegation at the Democratic National Convention. She also co-founded the Urban League of Eastern Massachusetts, and was its first female president along with being one of the youngest presidents of any Urban League. While there, she increased its budget tenfold. She became the first African American woman nationwide, along with being the first woman in Massachusetts, to be an on-camera legal editor for a major network. Alexander was often called upon to appear on television and on interviews. In 1979, Alexander was appointed to the United States district court as a magistrate judge by President Jimmy Carter. She was the first African American female judge to be appointed to that position, nationwide. She was also one of the youngest to ever be appointed to that position, nationwide. On January 2, 1996, she was made Chief Judge. She became the first African American chief magistrate judge working on the federal bench. She also simultaneously became the first African American chief judge of any court in Massachusetts.
Community work
Alexander co-founded and served as president of the Urban League of Eastern Massachusetts. She also served as chairperson of the Massachusetts Black Judges Conference, wherein she developed a scholarship program for minority students of law. She served as chairperson of the Judicial Council of the National Bar Association from 1987 to 1988. She participates in the "Kids, Courts and Citizenship" program in Boston, which she founded and maintains. In the program,more than 5,000 fifth-grade students of Boston public schools have visited her courtroom, spoken with her, and held a mock trial in her courtroom.