Richardson attended Bossier High School in Louisiana. He earned a 4-star rating from 247 Sports and 3-star ratings from ESPN and rivals.com. He chose to join Mississippi State over offers from Tennessee, South Carolina, Houston, and Louisiana.
Richardson played in 7 games as a true freshman, recording no stats.
As a sophomore, he played in 12 games, making 1 start. He came up with 13 tackles on the year.
His first season as a starter was in 2022 where he started all 13 games making 85 tackles with 3 pass breakups.
He returned to Mississippi State for his senior year in 2023 and once again started all 13 games. He tallied 79 tackles and 7 pass breakups.