Leon received a bachelor's degree from Texas Christian University, where he majored in political science with a minor in history. He received his law degree from Texas Tech University School of Law. After graduating from law school in 2003, Leon moved back to Fort Worth and founded The Law Office of Leon Reed Jr. He is an active member of the Tarrant County Bar Association, the Tarrant County Criminal Defense Lawyers Association and the Texas Criminal Defense Lawyers Association. In addition, Leon served as president of the Tarrant County Black Bar Association (now known as the L. Clifford Davis Legal Association) from 2008-2009.