[1] Beekman was a four-year letter-winner from 2017–20 under head coach Carlos Sample at Scotlandville Magnet HS.

During his tenure, he led the Hornets to an impressive 131–14 record and four Louisiana High School Athletic Associate (LHSAA) 5A state championships.

He also earned Louisiana Mr. Basketball honors after averaging 19.4 points, 9.1 rebounds, 9.9 assists, 2.7 blocked shots, and 2.2 steals as a senior in 2019–20.

During this recruitment process, Beekman received 21 offers including Florida, LSU, Wisconsin, and USC.

[6] After going undrafted in the 2024 NBA draft, Beekman signed a two-way contract with the Golden State Warriors on July 3, 2024.