[1] Jackson scored 5 goals and added 8 assists in 20 games (8 starts) in her freshman season with the USC Trojans in 2021, earning second-team All-Pac-12 honors.

[1][6] She missed two games in her sophomore season while at the 2022 FIFA U-20 Women's World Cup but returned to start the last 16, scoring 6 goals with 3 assists, and was named first-team All-Pac-12.

Jackson scored in four of her last five college games, including in the quarterfinals of the NCAA tournament, where she also made her penalty in shootout loss to Wake Forest after a 2–2 draw.

[8] When youth international play resumed, she helped the United States win the 2022 CONCACAF Women's U-20 Championship, scoring six goals in six games (four starts).

She played in two games off the bench at the 2022 FIFA U-20 Women's World Cup, scoring in a 3–1 loss to Japan, as the United States failed to make it out of the group stage.