Turner attended New Hampstead High School in Bloomingdale, Georgia, where he was a four-sport athlete, playing football, basketball, baseball, as well as running track.

[2] As a true freshman, Turner's coaches transitioned him to a defensive back and return specialist to get him playing time.

[6] Turner rushed for over 1,300 yards and 15 touchdowns in 2019 while also being named to the All-Pioneer Football League First Team as an all-purpose player.

[8] As a quarterback in an option offense at Jacksonville, Turner transitioned into a running back at Hawaii, later seeing time at wide receiver as well as fielding kicks.

[14][15] With the NCAA approving a waiver that allowed their 2020 class standing to be retained in 2021 in response to the COVID-19 pandemic, Turner announced he would return to Hawaii for the 2021 season rather than entering his name in the upcoming NFL draft.