Professor Field has been teaching at Harvard Law School since 1978. Ten years before that she graduated from the University of Chicago Law School (and before that from Harvard College). Right after law school, she clerked at the United States Supreme Court for Justice Abe Fortas, then taught at the University of Pennsylvania Law School for nine years before moving to Harvard. While a professor, she has on occasion participated in criminal trial work (working in Philadelphia as an Assistant District Attorney) and argued cases before the United States Courts of Appeals and the United States Supreme Court.
Professor Field has taught a range of subjects and now teaches Federal Courts, Constitutional Law, and Family Law. She has written articles on many federal courts subjects, concerning federal courts and federalism. Examples are "The Scope of Federal Common Law" in 99 Harvard Law Review 883 (1986); Garcia v. San Antonio Metropolitan Transit Authority: The Demise of A Misguided Doctrine, 99 Harvard Law Review 84 (l985), "The Eleventh Amendment and Other Sovereign Immunity Doctrines," in 126 U. of Penn. Law Review 590 (1977); and "Abstention in Constitutional Cases: The Scope of Pullman Abstention," in 122 University of Pennsylvania Law Review 15 (1974). She has also written in other areas, for example, "Killing the Handicapped" in 16 Harvard Women's Law Journal 79 (1993); "Pregnancy and AIDS" in 52 University of Maryland Law Review 701 (1990); and Surrogate Motherhood: The Legal and Human Issues (Harvard University Press 1989). Professor Field has just finished a book, to be paublished by Harvard University Press, about the constitutional rights of people who have mental retardation.