He played interscholastic football for Henry E. Lackey High School in Indian Head, Maryland, where he became one of the state's all-time rushing leaders.
He attended Henry E. Lackey High School in Indian Head, Maryland where he was a three-year starter in football.
"[4] At the end of his high school playing career, Green ranked as the fifth leading rusher in Maryland state history.
[6] He committed to Maryland, and head coach Ralph Friedgen rescinded a scholarship offer to future Heisman Trophy finalist Steve Slaton, partly in favor of Green.
[7][8] In 2005, Green failed to academically qualify for Maryland, and attended preparatory school at the Hargrave Military Academy in Chatham, Virginia.
[1] Before the 2007 season, he excelled in practice and was expected to make an impact as the two starting running backs had suffered injuries.
[11] It continued to bother him throughout the season, and he fell to the third-ranked rusher, behind starter Da'Rel Scott and reserve Davin Meggett.
Green decided that he would finish his degree at Maryland and then transfer to Towson University for the remainder of his athletic eligibility.