Marshall is originally from Tilden, Texas. He graduated from McMullen County High School in 2011 as Salutatorian where he also played Varsity Basketball all four years. His accomplishments also include Newcomer of the Year as a freshman, 1st Team All-District for 2 years, and Offensive MVP his senior year. He was also the captain his Junior and Senior years. He then continued his playing career at Centenary College of Louisiana. Currently, Marshall is attending Concordia University, pursuing a degree in Kinesiology.
After college, Marshall wants to coach high school basketball and teach mathematics. He is in his second year with CenTex Attack. He coached the 9th grade team last summer, as well as a 7th grade team this fall.