context1: Traditionally, Tongbeiquan <strong>instructors</strong> usually did not teach in public. Because of this conservatism, it was very difficult to join the group to study this skill. Tongbeiquan <strong>teachers</strong> would teach only behind closed doors.
context2: K. Leroy Irvis was born in Saugerties, New York. He graduated summa cum laude from the University of New York State <strong>Teachers</strong> College in 1938 with a master's degree in education—only the second black American to graduate from the college. Irvis proceeded to teach English and history in Baltimore high schools until World War II, when he became a civilian flying <strong>instructor</strong> in the War Department.