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Empowering Interpreters. Ensuring Equal Access to Justice.

Advance your career with professional hands-on training that bridges language, culture, and the courtroom. Learn anywhere, anytime, and make a difference where it matters most.

Welcome to GSO Services

Use Coupon Code THX10 For A 10% Discount On Self-paced Courses
Courses 2025:
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Instructor-Led
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Ethics in Expert Witness Testimony. Language Neutral, 2 dates: 3/5 and - 3/7 (3 cr) 

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Firearms & Ballistics II: Ghost Guns, Conversion Devices & Explosives. 3/21 - 3/22 (5 cr) 

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Sex Crimes TBD (7 cr)

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The Trial of Chapo Guzman. TBD (7cr)

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Mental Health, Competency and Insanity TBD (6 cr)

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Firearms & Ballistics  (8 cr) TBD

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DUIs & Field Sobriety Tests  (6 cr) TBD

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DNA  (4 cr) TBD

Domestic Violence  (5 cr) TBD

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La Mara (MS13) Double Murder (6 cr)  TBD

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Self-Paced (Expert Witness Series)
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Domestic Violence (5 cr)

Firearms & Ballistics (8 cr)

Sex Crimes (7 cr)

DUIs & Field Sobriety (6 cr)

Medical Examiner & Autopsies (7 cr)

DNA (4 cr)

Ethics in Expert Witness Testimony. Language Neutral (3 cr) 

Coming soon:

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Firearms & Ballistics II: Ghost Guns, Conversion Devices & Explosives 5 cr)

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Mental Health, Competency and Insanity (6 cr)

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Other Self-Paced Courses
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The Trial of El Chapo Guzman (7 cr)

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FREE. Witness to a Trial (3 cr)

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Court Interpretation (40 hrs)

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True Crime Podcasts (2 cr)

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Ethics in Expert Witness Testimony. Language Neutral (3 cr) 

Coming soon:

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MS13 Double Murder Trial (6 cr)

When interpreters rise, access to justice rises with them.

GSO Services

strongly believes in the right to equal access to justice and healthcare. We recognize the great responsibility that rests on the shoulders of the interpreter; to ensure that a Limited English Proficient person is on equal footing with a person fluent in English.

Products & Services
Click On Any Of The Following Links For More Information
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Court Interpretation
40 HOUR COURSE

For english<>spanish aspiring court interpreters

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Approved for Continuing Education
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Glossary of Legal & Forensic Terms

Training interpreters today means creating a fairer tomorrow.

We are proud to announce our comprehensive Glossary of Legal and Forensic Terms

Use Coupon Code THX10 for 10% Discount

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To purchase only the materials, you are in the right place.
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Firearms & Ballistics, Sex Crimes, DUIs, Medical Examiner &  Autopsies, are some of the titles in this Expert Witness Series for court and medical interpreters. 

FOR INTERESTED INSTRUCTORS, GSO Services can provide course materials and presentations. Please call us directly.

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Genevieve “Gigi” Sefchick is a Nevada Court-Certified Interpreter and a Certified Healthcare Interpreter (CCHI). She recently retired from the Washoe County District Attorney’s Office, where she served as a Victim Advocate for nearly two decades, beginning in 2004. She served as Chairperson of the Alliance for Victims’ Rights from 2016 to 2020.

Gigi has trained court interpreters since 2005, beginning at Truckee Meadows Community College, where she prepared aspiring interpreters for state certification. Over time, she developed specialized training materials and workshops focused on the terminology used in expert witness testimony, including firearms and ballistics, sex crimes, fingerprints, DNA, serology, and other forensic disciplines. She has also taught advanced courses in simultaneous interpretation, note-taking, and medical interpretation, supporting certified interpreters in earning Continuing Education Units (CEUs) required for license maintenance.

In addition to TMCC, Gigi has served as an instructor at the University of Nevada, Reno’s International Center and the Northern Nevada Literacy Council. She is currently a member of the National Association of Judiciary Interpreters and Translators (NAJIT).

Gigi now teaches nationally through online courses hosted on the Teachable platform. Recognizing the lack of advanced, terminology-driven training for court interpreters, her mission is to provide rigorous, practical learning opportunities that strengthen interpreter performance and promote meaningful access to justice for all court participants.

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Regina Olivares is a Certified Healthcare Interpreter (CCHI) and bilingual Spanish–English language specialist with experience working in healthcare, legal, and multilingual communication environments. She has provided high-accuracy interpretation for hospitals, clinics, and remote language service providers, ensuring precise communication between professionals and Spanish-speaking clients while maintaining linguistic accuracy, tone, and cultural nuance.

In addition to her work as an interpreter, Regina collaborates on the development of educational materials for interpreters through GSO Services. Her work includes creating bilingual glossaries, terminology resources, interpretation exercises, and structured training content designed to help interpreters strengthen language transfer skills and accurately render complex terminology in both medical and legal contexts.

Regina also contributes to language quality assurance and linguistic analysis projects, reviewing Spanish usage for clarity, accuracy, and professional tone, and assisting in the evaluation of AI-generated language and terminology. Her work supports the development of innovative training resources that combine real-world interpreting experience with modern language technology.

Real experiences from interpreters who trained with GSO Services and transformed their careers.

"I was already familiar with Gigi's training materials but taking her self-paced expert witness courses (accredited by my licensing state) has been much more instructive. Her training is relevant and concise. In particular, the Firearms and Ballistics module is outstanding; this is a subject that has been very difficult for me, but the curriculum is designed to help you understand the gist of what interpreters need during expert testimony, through short videos, vocabulary repetition, glossary build up and simultaneous interpretation practices. I also appreciate that the training module with all the practices and videos remain yours forever. Last but not least, even though the module is designed to have a duration of 8 hours, it does not need to be finished in 8 consecutive hours and you can certainly drill more the concepts that you need. Thank you Gigi. I look forward to do more of these modules!!!

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Layla Yatim ( TX )
We’re ready to help you to obtain Court Certification.
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Phone and Text

775-351-3905

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