In his freshman season, he averaged 16.2 points, 7.5 rebounds, and two assists per game and was teammates with Cassius Stanley.

Harvard-Westlake won the CIF Southern Section (CIF-SS) Division 1A championship after Juzang recorded 21 points, 11 rebounds and four assists in the final.

[1] In his junior season, Juzang averaged 23 points, 8.5 rebounds and 3.4 assists per game and was named the most valuable player of the Mission League.

[5] He helped lead Harvard-Westlake to their first league title since 2011 after scoring 25 points in the championship game against rival Loyola.

[11][12] His defense was considered a weakness, and he did not shoot well enough to compel Wildcats coach John Calipari to play him more.

The game included a stretch where Juzang scored 21 straight points for the team, making eight consecutive shots to end the first half and begin the second.

[29] He became the first player to score at least half of his team's points in a regional finals win since Oscar Robertson in 1960.

[31] Juzang scored 29 points in the national semifinal against 1-seed Gonzaga, including a basket to tie the game with 3.3 seconds remaining in overtime, but the Bulldogs' Jalen Suggs made a 40-foot (12 m) buzzer beater to win 93–90 over the Bruins.

[38] Hoping to boost his draft stock, Juzang instead fought injuries,[39] missing one game due to a sore hip from a scooter accident and two others with a sprained right ankle.

[49] He scored 14 again in the Bruins' season-ending 73–66 loss to North Carolina in the Sweet Sixteen, but needed 13 shots and was only 2-of-8 shooting in the second half.

[55] He made his NBA debut on February 28, 2023 in a 102–94 loss to the San Antonio Spurs, scoring three points.

[56] In a March 15, 2024 game against the Atlanta Hawks, Juzang scored a then-career-high 19 points on 7-for-11 shooting in 25 minutes off of the bench.

[57] Juzang scored a new career high of 27 points against the Golden State Warriors in a regular season game on April 7, 2024.