Judge Mary Celeste (Ret.) | Expert Witness | Denver, CO
header header
Judge Mary Celeste (Ret.) | Denver, CO Facebook Twitter LinkedIn 2016 Best Legal Blog Nominee home bg header judge mary celeste Judge Mary Celeste (Ret.) Judge Mary Celeste (Ret.) Judge Mary Celeste (Ret.)

Judge Celeste (Ret.) offers a number of services as an educator, speaker, consultant and trainer. She complies with government funding requirements and has been approved for CLE, CEU, CMU, CME credits

Speaker, Educator and Consultant

Impaired Driving, Marijuana and Drugged Driving

"Judge Mary Celeste is extremely knowledgeable in many areas of substance-impaired driving. I’ve had the pleasure of working with her on multiple occasions and each experience has been delightful. Whether we are presenting on a panel together, or seeking her expertise to review text for an article or website, she’s been dependable and added another level of understanding to the topic. "Nathan Warren-Kigenyi, Manager, Traffic Safety Research and Analysis, AAA National Office


“Judge Mary Celeste (ret.) has a wealth of knowledge regarding the marijuana industry and it showed with her presentation at the 2016 DATIA Annual Conference. She provided our attendees with valuable, timely and insightful information on how marijuana legalization is changing the landscape of America. She’s been a pleasure to work with, a great resource, and we look forward to working with her in the future!”

The Drug & Alcohol Testing Industry Association (DATIA)


“Judge Celeste is an extremely knowledgeable and captivating presenter. After you finish listening to her, you will be more enlightened than you were when you walked in. She also injects appropriate humor into her presentations. Never a boring moment, for sure.”

Law Enforcement Services, PA DUI Association


"Would recommend again…very good… lots of information. Informative/well presented; Excellent!; Good information, efficient use of time; Very interesting and informative; Good speaker; Good information."

Institute of Continuing Judicial Education of Georgia


This past fall, she presented on New Marijuana Laws in New England.

Some comments included “Facilitator was extremely knowledgeable, a great presenter and enjoyable also was able to presentinformation and history of laws in a clear, organized manner; she kept her presentation flowing while allowing for questions and discussions”. Because her evaluations were among the highest and her subject matter relevant –

she is indeed a content expert- we would welcome her back again at   training events or our annual conference. Roberta Leis, Executive Director, New England Association of Drug Court Professionals








Presentation to ALA 2017, Marijuana in the Workplace


Upcoming Presentations/Projects 


Michigan Court Adminstation Association (MCAA)

Chrystal Falls, Michigan, May 20, 2020

Cannabis & Driving; Cannabis and the Youth



Drug & Alcohol Testing Industry Association (DATIA)

Washington D.C., May 29, 2020, Cannibis & Driving



Indiana Prosecuting Attorneys Council

June 25, 2020, Indianapolis, Indiana, Cannabis & Driving



Marijuana Seminar, Guam/Palau

Pacific Judicial Council (PJC), June 24-July 2, 2020



American Probation & Parole Association

Boston, Mass., August 1, 2020, Medical Marijuana & The Courts



North Dakota Association for Justice

Fargo, N.D. September 24, 2020

Marijuana & the Youth; Cannabis & Driving



Research Team Member National Opinion Research Center (NORC) Research Project 2019-2022 sponsored by the National Highway Traffic Safety Administration (NHTSA)  ONGOING