In Griffith's first collegiate season in 2021, he notched 31 tackles with 10.5 being for a loss, five sacks, and a forced fumble.[4] During the 2022 season, Griffith started in ten games for Harvard, totaling 46 tackles with 12 being for a loss, and five sacks.[5] For his performance during the 2022 season, Griffith was named to the all Ivy League first team.[6] In the 2023 season, Griffith tallied 55 tackles with 11 going for a loss along with three and a half sacks.[7] For his performance during the 2023 season, Griffith was named to the first team all Ivy League team.[8] After the conclusion of the 2023 season, Griffith decided to enter his name into the NCAA transfer portal.[9][10]
Griffith finished his career at Harvard playing in 30 games where he finished with 132 tackles with 33.5 being for a loss, and 13.5 sacks.[11]
Griffith's personal records include a 40-yard dash time of 4.95 seconds, and bench-pressing 225 pounds 45 times.[12]