Georgetown and
Patrick Ewing after Georgetown won the
1984 national title Thompson was a guidance counselor and head coach at St. Anthony High School in
Washington, D.C. from 1966 to 1972, compiling a 122–28 record. He left St. Anthony for
Georgetown University, who chose him over more experienced candidates
Morgan Wootten and
George Raveling. Over 27 years, Thompson's Hoyas went 596–239 (), Georgetown missed repeating as champs in
1985, losing in the finals to underdog
Villanova. He won seven Coach of the Year awards:
Big East (1980, 1987, 1992),
United States Basketball Writers Association (1982),
The Sporting News (1984),
National Association of Basketball Coaches (1985), and
United Press International (1987). Thompson coached many notable players, including Ewing,
Sleepy Floyd,
Alonzo Mourning,
Dikembe Mutombo,
Allen Iverson and
Victor Page. Under Thompson, 26 players were chosen in the
NBA draft; eight were drafted in the first round, including two players
selected first overall: Ewing and Iverson. Thompson also insisted on top academic performance from his players and maintained a 97% graduation rate among the team.
Confronting drug lord In the late 1980s, Thompson got word that several of his players, including
Alonzo Mourning, were associating with noted
Washington, D.C. drug lord and avid Hoya fan
Rayful Edmond III, whose crew was connected to at least forty homicides. At the height of his empire, Edmond became very friendly with several Hoyas players. When Thompson confirmed what was happening, he sent word through his sources to have Edmond meet him at his office at McDonough Gymnasium. When Edmond arrived, Thompson was initially cordial, and informed Edmond that he needed to cease all contacts with his players post haste, specifically
John Turner and Mourning, both of whom had befriended Edmond. When Edmond tried to assure him that his players were not involved in anything illegal, the 6'10" Thompson stood up and pointed his index finger between Edmond's eyes. Thompson, known for his volatility, quickly boiled over, and unleashed a profanity-laced tirade in which he told Edmond that he did not care about his crew's violent reputation or propensity to commit murder. Edmond had crossed a line with Thompson's players, and Thompson was not going to allow Edmond to destroy the players' lives. At the publishing of his autobiography, however, it was revealed that the conversation between Edmond and Thompson was not as confrontational as once believed. "A myth has grown about me threatening Rayful and ordering him to stay away from my players. Some people like to say I stood over him and pointed my finger in his face. That's nonsense. That myth is based on the perception of me as intimidating and a bully. Like when I argued with refs, I supposedly scared them. Edmond never associated with another Hoyas player on a personal level, and Thompson was the only person to stand up to Edmond without consequence, initially causing some shock and surprise that there was no reprisal.
U.S. national team Thompson was an assistant coach for the
U.S. national team on its gold medal-winning
1976 Olympic team. He was later the head coach of the
1988 Olympic team, the Americans' last fully collegiate squad. Although favored to win the international tournament, the United States was narrowly defeated by the all-professional and experienced
Soviet Union in the semifinals 82–76, marking the first time the Americans did not reach the gold medal game. The United States won its final game against
Australia to capture the bronze medal, the lowest finish by an American team for men's basketball. Thompson expressed concerns that the proposal would leave many student athletes without a means of paying for their education, as well as what he felt would be the proposal's disproportionate impact on Black athletes.
Resignation On January 8, 1999, Thompson announced his resignation as Georgetown's head coach, citing marriage problems. He was replaced by longtime assistant
Craig Esherick. Thompson was inducted into the
Naismith Memorial Basketball Hall of Fame on October 1, 1999. Esherick was fired in 2004 and replaced by
John Thompson III, Thompson's eldest son. At the time the elder Thompson was serving Georgetown in what Rev.
Leo J. O'Donovan, university president, referred to as a "coach
emeritus" position, assisting on academic, athletic, and community projects. John Thompson III coached Georgetown until 2017. John Thompson Jr.'s younger son,
Ronny Thompson, formerly an assistant coach at Georgetown, was the head coach at
Ball State. ==Post-coaching career==