gibson attended buena high school, where he played two seasons as an offensive lineman and defensive end. he finished with over 100 tackles, 27 sacks, and 12 forced fumbles. he received 0 scholarship offers after graduating from buena high school in 2009. fall 2009, he attended hargrave military academy and moved to offensive tackle. he became the number 1 offensive tackle and number 2 overall player in the united states (rivals.com). he received over 30 scholarship offers from ncaa division i and division ii schools during his time at hargrave military academy.