Completed Missionary Service in Roseville, California during his first year of college in 2017. Hall sat behind Tanner Mangum and Zach Wilson during the 2018, 2019 and 2020 seasons., Wilson went on to be drafted top-5 overall by the New York Jets.
After four seasons, Hall had only attempted 46 passes, so it would have been easy to see him lose confidence, but he didn't. Jaren also played Baseball at BYU during the 2019 and 2020 seasons, playing in 30 games as an outfielder. In 2021, Hall got his chance to play Quarterback for BYU, and was named the first black starting Quarterback in school history, an accomplishment he holds in high regard. Over his final two seasons at BYU, Hall finished with 5,704 passing yards, a 65.2 completion percentage, and a 5-1 touchdown to interception ratio.
