Schoenberg hails from Marrabel in the State’s Mid North and graduated from Prince Alfred College in 2018. After being overlooked in South Australia’s initial training squad, Schoenberg not only pushed himself back into the team for the 2019 under-18 championships but dominated as a midfield, earning SA’s MVP award and All Australian honours. Adelaide selected the Woodville-West Torrens player with pick No. 24 in the 2019 Draft and he debuted in Round 10, 2020, playing the remaining eight games of the season.