The son of former professional soccer player and coach Reynold Carrington, he starred at Bishop Loughlin Memorial High School in Brooklyn, New York.

As a senior, he led the Catholic High School Athletic Association (CHSAA)'s Class AA division in scoring with 24.2 points per game and was named the Brooklyn Boys' Player of the Year by the New York Daily News.

Carrington's scoring declined to 15.6 points per game as a senior but he led the Pirates to an NCAA Tournament win over NC State.

[4] Carrington was also named the CHSAA Player of the Year as he led the Lions to the Catholic Intersectional title game.

[6] However, with Whitehead missing several games in January 2015 due to a foot injury, Carrington was able to demonstrate his potential, contributing 17 points in an overtime win against Villanova.

[11][12] Carrington averaged 19.2 points per game during the 2016–17 non-conference season, but hit a slump in the early part of conference play due to increased defensive attention and a dislocated pinkie finger.

[16] Coming into his senior year, Carrington and Angel Delgado were named to the preseason All-Big East First Team.

[17] He made the switch to point guard over the summer by studying video with coach Kevin Willard and assistant Shaheen Holloway.

[19] He was Big East Player of the Week on February 26, after leading Seton Hall to a win against Providence by scoring 25 points.

[20] Carrington led the Pirates to their first NCAA tournament victory in 14 years as a senior, scoring 26 points to defeat NC State.

[28] He averaged 17.2 points (3rd in the league), 3.9 rebounds, and 3.3 assists per game for the team, while shooting 82.8% from the free throw line.

[29] On July 19, 2020, Carrington signed a two-year deal with TD Systems Baskonia of the Liga ACB and the EuroLeague.

[30] On September 11, 2020, Carrington was released because he was experiencing delays with the renewal of his Trinidadian passport due to the COVID-19 pandemic.