[1] Before the advent of modern law schools in the United States, justices, like most attorneys of the time, completed their legal studies by "reading law" (studying under and acting as an apprentice to more experienced attorneys) rather than attending a formal program.
Woodbury had attended Tapping Reeve Law School in Litchfield, Connecticut, the most prestigious law school in the United States in that day, prior to his admission to the bar in 1812.
Woodbury's successor on the Court, Benjamin Robbins Curtis, who received his law degree from Harvard Law School in 1832, and was appointed to the Court in 1851, was the first Justice to bear such a credential.
These justices were educated at the equivalent of an undergraduate level, but did not receive legal education at the graduate level, the model under which law schools in the United States are currently organized.
Some justices received no education in a university setting, but were instead either trained through apprenticeships or were self-taught, as was common with many lawyers prior to the mid-20th century.