A more thorough explanation:

The Order of the Coif is a legal organization that was originally known as the order of serjeants-at-law. It was the highest order of counsel at the English Bar, but the last serjeant was appointed to the Order in 1875. Today, the Order of the Coif is an honorary legal organization that selects its members based on their law-school grades.

For example, if a law student has excellent grades, they may be invited to join the Order of the Coif. This is a great honor and shows that the student is among the best in their class.

The Order of the Coif is a prestigious organization that recognizes excellence in the legal profession. Its members are highly respected and often go on to have successful careers in law.