Benjamin O. Davis, Jr. graduated from West Point despite being "silenced" his entire 4 years there.
No single person spoke to him about anything but professional matters.
He never had a roommate.
He ate by himself.
He graduated in the top 15% of his class anyway, and went on to become the Group Commander of the Tuskegee Airmen, and a 3-star general in the United States Air Force.
Source: "American" by Benjamin O. Davis, Jr.