[2] She attended JSerra Catholic High School in San Juan Capistrano, where she played soccer, basketball, and tennis.
With the soccer team, she won three consecutive CIF Southern Section state championships and was named the Trinity League defensive player of the year in 2019.
[4][5] Campbell served as the understudy to starting goalkeeper Katie Meyer during her first two seasons with the Stanford Cardinal, redshirting as a freshman in 2020 and making only five appearances as a sophomore in 2021.
[2][6] In her junior season in 2022, Campbell started 21 games and kept 8 solo clean sheets (along with 4 combined) against only 11 goals allowed, earning third-team All-Pac-12 honors.
After the season, Campbell was named second-team All-Big Ten and fourth-team All-American by United Soccer Coaches.