Tacario Davis attended Millikan High School in Long Beach, California, where he played both defensive back and wide receiver. He totaled 74 tackles along with 26 receptions for 463 yards in his high school career. In his final year, he was a first-team All-Moore League selection and a team captain. Davis was ranked a three-star recruit by 247Sports and committed to the University of Arizona over offers from Kansas and Arizona State.
Davis appeared in five games for the Wildcats as a true freshman in 2022, and posted seven total tackles in a limited reserve role.
He made a huge jump forward in 2023 becoming one of the top cornerbacks in the nation. He played 13 games, 11 as a starter, while collecting 25 tackles, and interception, and leading the Pac-12 conference in both pass breakups (15) and passes defended (16). He was named a second-team All-Pac 12 selection by the AP.
Davis entered the NCAA transfer portal after the 2023 season but ultimately returned to Arizona for the 2024 season.