Douglas is licensed to practice before the U.S. District Court, Northern and Eastern Districts of Texas, and the U.S. Court of Appeals, 5th Circuit. He is a graduate of the South Texas College of Law in Houston, and Lamar University in Beaumont.
- Criminal Law, Texas Board of Legal Specialization, 1982
- Texas, 1976
- U.S. District Court Northern District of Texas
- U.S. District Court Eastern District of Texas
- U.S. Court of Appeals 5th Circuit
South Texas College of Law, Houston, Texas
- Doctor of Jurisprudence – 1975