Virtual CAOHC Courses offered by Earmark Hearing Conservation are entirely online with no in-person requirements. Instruction, audiometric practicum, hearing protection device practicum, and examination are all completed through your browser. Please reach out with any questions regarding our virtual courses.

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Ty Feb 24, 2025

very well presented course, very professional yet casual atmosphere

Course: CAOHC Certification Course
Kevin Feb 21, 2025

To Frank, Juan, Hannah and Mindy you guys were awesome. Classes were always on time, lecturers ensured students understood the material. I would definitely recommend this course to my peers.

Course: CAOHC Certification Course
Phillip Feb 13, 2025

Amazing course with excellent delivery for a virtual class. I enjoyed the course and the various stories from those in the class.

Course: CAOHC Recertification Course
Martin Nov 8, 2024

Very thoroughly taught. Loved the interaction and discussions between classmates and instructors. Audiometer simulator is amazing and great practice.

Course: CAOHC Certification Course - Co-Hosted with JHU
Janet May 25, 2024

I enjoyed the up beat, humorous presentation by Frank and Juan. Every explanation was explained with a practical, real life analogy that everyone could understand. No one was ever put on the spot or made to feel inferior. I felt they all were genuinely committed to everyone’s success in gaining certification ( and maybe some passion for hearing conservation). In my 40+ years of attending professional conference’s, lectures, and oh so many certification classes, I enjoyed this one the most 10/10 would recommend ! Kudos to everyone at Earmark :)

Course: CAOHC Certification Course
Margaret Mar 8, 2025

The instructors were amazing, and the course was very interactive and engaging. I felt well-prepared for the certification exam. Highly recommend earmark!

Course: CAOHC Certification Course
Mark Feb 21, 2025

Great content and teaching technique would recommend this course to anyone who is needing it.

Course: CAOHC Certification Course
Stuart Feb 20, 2025

Excellent recertification class, all the information needed for recert without unnecessary fluff. Good use of time for each section of study.

Course: CAOHC Recertification Course
Diane Jan 23, 2025

Well planned and presented by clearly knowledgeable staff covering a very technical topic

Course: CAOHC Certification Course
Nicole Jan 20, 2025

Great presenters and I loved the interactive portion. I felt very well prepared and confident going into the test. Thank you!!

Course: CAOHC Certification Course
Linda Jan 10, 2025

Having done the refresher course previously in-person, I was a bit concerned about the course being virtual. I thought maybe it would be more difficult to stay focused and didn’t think the practicum segments would be as comprehensive. However, Juan, Frank and Hanna did such a wonderful job of presenting the material that I was actually more focused than I’ve been in previous in-person courses! Even though other students were in the class, being on camera for the course gave more of a 1:1 feeling vs. being in a physical classroom with other students. The practicum segments were just as (if not more) educational and helpful as my previous courses as well. Thanks for making my (probable last - hope to be retired within 5 years :-) ) re-cert course a great one!!

Course: CAOHC Recertification Course
Amber Dec 12, 2024

I thought the course was great. There was a lot of information to cover but Frank kept it “light” with his humor.

Course: CAOHC Recertification Course - Co-Hosted By JHU
Cristina Dec 6, 2024

Great course. Very engaging!

Course: CAOHC Certification Course - cohosted by Rutgers School of Public Health
Jessica Nov 8, 2024

The instructors were all amazing!! They taught very well.

Course: CAOHC Certification Course - Co-Hosted with JHU
Jennifer Oct 28, 2024

Highly intelligent and engaging professionals leading the course. Break out sessions were a nice change of pace in a virtual setting. Virtual audiometer program was a reasonable approximation for real world, manual audiometer operations. A smart combination of professionalism and family friendly hearing related “dad jokes” really broke up the content and made harder to digest materials easier to remember. Lastly, no timeline given for Juan’s audio book career launch. Please place us on the email list for that. Thank you. Will be returning to this company for the renewal courses.

Course: CAOHC Certification Course
Jeniene Oct 16, 2024

This was a great class. Information was pertinent and Instructors were knowledgeable and engaging.

Course: CAOHC Recertification Course
Collette Aug 9, 2024

This is an excellent way to complete the requirements when time, distance, and scheduling conflicts arise. The staff are excellent and very professional. I would take this method of recertification again.

Course: CAOHC Recertification Course
Christina Aug 8, 2024

Frank and Juan, you made the course fun and interesting. I’m not sure how you made an 8-hour class seem like a 2-hour class. But, you did. You both did a fantastic job. Thank you.

Course: CAOHC Recertification Course
Dustin Jun 24, 2024

Great instructiors and course material. Haven’t learned so much so quickly and pain free.

Course: CAOHC Certification Course
Brianna May 28, 2024

The course was very informative! The instructors are very knowledgeable, and they bring a lot to the hearing world! Please continue to bring laughter to the course it makes the course a lot more enjoyable and free flowing. Will be back for my RE-Cert!

Course: CAOHC Certification Course
Nicole May 4, 2024

Course content was excellent and pertinent for both in Occupational Health and/or Safety. I really enjoyed the entire course, the way the class was split both lecture and hands on portions were useful for those of us who are hands on learners. The final day and the review were also very helpful, and I appreciated the guidance as we walked through each topic.
All the educators for this course, were passionate in helping people. They helped instill a strong understanding and knowledge base for us. It was truly refreshing, and I am glad that I was able to develop my skills from those that truly want to make a positive impact. Thank you, I will be referring others to EarMark Hearing Conservation.

Course: CAOHC Certification Course - co/hosted by FOSTER SPECIAL INSTRUMENTS
Kelly Apr 11, 2024

Juan, Frank, Hannah- well done! I love the jokes- keep’m coming :) I wouldn’t change a thing. Thanks for putting on such a great Recert Class. I will definitely recommend to others!

Course: CAOHC Recertification Course
Laurie Mar 22, 2024

Great class, great instructors (always nice when instructors are involved and very knowledgeable in topic of study), and interaction through the computer phenomenal!! Recommend to anyone!!

Course: CAOHC Certification Course
Andy Mar 13, 2024

As a presenter myself, I thought the course was very good. But it was made much better by the tone of the 2 instructors, and their willingness to be patient and work with people that were struggling with the virtual technology. Instead of making it very awkward for everyone else, and embarrassing for the attendees having issues, they always had a plan B, and sometimes even a plan C to help everyone get the best out of the class. I felt very well prepared to take the exam. They really did a great job!!

Course: CAOHC Recertification Course with Rutgers School of Public Health
Eric Mar 2, 2024

The Instructors did a fantastic job both presenting the infromation and keeping the class as fun as possible. I learned far more than I expected I would and will recommend there services to anyone needing the training they offer.

Course: CAOHC Certification Course
Jennifer Dec 8, 2023

I recently completed the hearing conservation educational recertification course with Earmark Hearing Conservation, and I couldn’t be more impressed. Frank Wartinger played a pivotal role in preparing us, providing unwavering support throughout. Juan Vasquez’s teaching and presentation skills were exemplary, making the complex material not only accessible, but engaging.

The class was meticulously organized, and all materials were delivered promptly, showcasing a commitment to excellence. The reasonable cost added to the overall positive experience. Despite having 31 years in the industry, I found the course incredibly enlightening, and it enhanced my understanding significantly. I wholeheartedly recommend Earmark Hearing Conservation for anyone seeking top-notch education or recertification in this field.

Course: Virtual CAOHC Recertification Course
Natalie Aug 11, 2023

Absolutely the best class!
Frank made the class fun and was a great instructor. I would highly recommend Frank and his team!

Course: Virtual CAOHC Recertification Course
tracey Jan 10, 2025

This was my first online class and it went very well. All three presenters were excellent.

Course: CAOHC Recertification Course
Daniel Dec 6, 2024

Great course. Better than expected. I learned a lot.

Course: CAOHC Certification Course - cohosted by Rutgers School of Public Health
Roberta Oct 17, 2024

Very easy to listen to and I liked the ability to interact during class.

Course: CAOHC Recertification Course
Jennilyn Sep 28, 2024

Excellent course! The material was organized and presented well, and the instructors clearly love what they do! They made the course interesting and even fun at times. They also provided a very thorough review that was quite helpful with the exam. I highly recommend this course!

Course: CAOHC Certification Course
Cody Sep 28, 2024

This was the best online training course I have ever taken. It was easy to follow and understand!

Course: CAOHC Certification Course
Abbie Sep 27, 2024

I was so glad this class was offered fully online. The instructors, Frank and Juan, were patient and thorough. All of the information presented was relevant. I felt the audiometry simulator provided valuable “hands on” experience. I feel prepared to do audiometry testing and in recognizing STSs. Thank you for a wonderful class!!

Course: CAOHC Certification Course
Melissa Sep 9, 2024

The instructors were very friendly & helpful in their attempts to cover all the basics as well as answer any questions. I was very intimidated at first (mainly with the use of technology, going to different “rooms”) LOL They helped clear up and smooth out the information from the textbook, which was difficult to initially comprehend. All in all, a great class!

Course: CAOHC Certification Course
Jennifer Sep 9, 2024

Can’t say enough good things about this hearing conservation class. So informative and engaging. Highly recommend

Course: CAOHC Certification Course
Janet Sep 7, 2024

Provided a friendly learning place with materials that were easily understood.

Course: CAOHC Certification Course
KRISTAL Aug 23, 2024

Juan and Frank have put together a program that is user friendly, fun, and thorough. Juan is a great teacher and very patient. I would highly recommend their course and plan to see them for recertification!

Course: CAOHC Certification Course - West Coast Schedule Friendly
Lenora Aug 19, 2024

Enjoyed the training for this certification very much. The instructors were awesome at presenting the information in a manner that kept you engaged.

Course: CAOHC Certification Course
Paul Aug 9, 2024

Well organized course, excellent presentation of relevant information.

Course: CAOHC Recertification Course
Yazneth Jul 26, 2024

Frank and Juan were very kind and their teaching is great. I understood everything they taught and their teaching dynamics are excellent. I enjoy the course very much and look forward for the re-certification with them in 5 years from now. I’m very grateful to them for their shared knowledge.

Course: CAOHC Certification Course - Co-Hosted with JHU