Judge Calabresi was appointed United States Circuit Judge in July, 1994, and entered into duty on September 16, 1994. Prior to his appointment, he was Dean and Sterling Professor at the Yale Law School where he began teaching in 1959. He continues to serve as a member of that faculty as Sterling Professor Emeritus and Professorial Lecturer.

Judge Calabresi received his B.S. degree, summa cum laude, from Yale College in 1953, a B.A. degree with First Class Honors from Magdalen College, Oxford University, in 1955, an LL.B. degree, magna cum laude, in 1958 from Yale Law School, and an M.A. in Politics, Philosophy and Economics from Oxford University in 1959. A Rhodes Scholar and member of Phi Beta Kappa and Order of the Coif, Judge Calabresi served as the Note Editor of the Yale Law Journal, 1957-58, while graduating first in his law school class.

Following graduation, Judge Calabresi clerked for Justice Hugo Black of the United States Supreme Court. He has been awarded some fifty honorary degrees from universities in the United States and abroad, and is the author of five books and over a hundred articles on law and related subjects.

Judge Calabresi is a member of the Connecticut Bar.