Call Now (503) 658-3100
16126 SE Happy Valley Town Center Dr. Suite 110, Happy Valley, OR 97086
M. Seong

About US World Class Taekwondo - Happy Valley in Happy Valley, OR

Meet Master M. Seong

Chief Instructor at
US World Class Taekwondo - Happy Valley in Happy Valley
5th Dan

US World Class Taekwondo Happy Valley offers fitness, fun, and self-defense for all ages!

Most of our classes are kid focused – but we have plenty of options for families, athletes, or weekend warriors just wanting to get in shape. With classes offered 6 days per week for students of all ages and experience levels, there’s sure to be something going on just right for you!

Don’t have prior experience? No problem! You don’t need to be a martial arts expert to train with us. All new students are given introductory lessons on an individual basis so you or your family can practice at your own pace.

You’ll get in great shape fast while building self-confidence and boosting your ability to use the special skills of Taekwondo!

Be sure to read about our instructors below as well, they are highly skilled and eager to help you learn. Call or stop by today to have any additional questions answered. See you soon!

M. Seong, Head Instructor
Head Instructor M. Seong is a native from South Korea – homeland of Taekwondo. He has been practicing martial arts for the last 25 years and holds a 5th Dan Black Belt conferred by the distinguished Kukkiwon (World Taekwondo Headquarters).

Master Seong has more than a decade of coaching experience, working with beginner to experienced Taekwondo athletes of all ages.

Some of Master Seong’s Awards and Recognitions Include:

  • 1st Place: 2014 US National Championships (Poomsae)
  • 1st Place: 2014 US World Class Championship (Poomsae)
  • 1st Place: 2014 Pan Am Open Championships (Poomsae)
  • 1st Place: Florida Open International Championships (Poomsae)
  • 1st Place: Florida Sunshine State Championships (Poomsae)
  • 1st Place: The 1st World Traditional Martial Arts Championships (Poomsae)
  • 1st Place: 2010 Busan Mayor's Cup Taekwondo Championships (Sparring)
  • 1st Place: Chief of Air Force Taekwondo Championships (Sparring)
  • 1st Place: The 1st Director of Police Taekwondo Championships (Sparring)
  • 1st Place: 2008 Busan Mayor's Cup Taekwondo Championships (Sparring)
  • 2rd Place: The 5th GyungSangNamDo International Taekwondo Championships (Sparring)
  • 2nd Place: The 85th National team trial Competition Busan Representative (Sparring)
  • 3rd Place: The 14th Busan Asian Game Taekwondo (Sparring)
  • 3rd Place: Minister of National Defense's Cup (Sparring)
  • 3rd Place: The 14th Taekwondo Association Championships (Sparring)


  • 5th Dan Black Belt conferred by Kukkiwon, South Korea
  • Sports for All Licenses, South Korea (Level 3)
  • National Coaching Certificate, South Korea (Level 3)
  • 3rd Class Sports for All Leader: Taekwondo
  • 2nd Class Baby & Children Sports Instructor Leader
  • Certificate of Appreciation: World Traditional Martial Arts Association

Dr. Haeri Choi, Program Coordinator & Instructor Assistant
She received her Doctor of Philosophy (Aging Biochemistry) from Seoul National University College of Medicine in 2012. Dr. Haeri has been a senior fellow in the Department of Pathology, University of Washington since 2012. Dr. Choi has over 5 years teaching experience, is a research assistant, research mentor, and author of 13 journals on the aging science field (

Dr. Haeri Choi’s Recognitions

  • Front. Genet. 2015 October
  • Worm. 2014 Oct 30;3(3):e959404.
  • Nat Commun. 2014 Mar 24;5:3483.
  • PLoS One. 2013 Dec 10;8(12):e82543.
  • PLoS One. 2011;6(8):e23367
  • Exp Mol Med. 2011 Sep 30;43(9):525-37
  • Apoptosis. 2011 Aug;16(8):795-807
  • Aging Cell. 2011 Feb;10(1):148-57
  • Exp Mol Med. 2011 Jan 31;43(1):15-23.
  • Biochem Biophys Res Commun. 2010 Oct 8;401(1):131-6.
  • Biochem Biophys Res Commun. 2010 Jan 1;391(1):28-32.
  • Cell Biochem Funct. 2009 Jul;27(5):289-95.
  • Cell Death Differ. 2008 Nov;15(11):1673-80.
  • NOVA Publishers. 2012
  • International patent: PCT/KR2009/004212

Our Team

  • Amanda Ellis – Instructor
  • Logan Wilks – Instructor Trainee
  • Dan Wilson – Assistant Instructor
  • Lori Wilson- Assistant Instructor

How To Get Started

Come join our Happy Valley, OR Martial Arts facility! We offer programs in Kids Martial Arts and Adult Martial Arts. Choose a program that most interests you and have the opportunity to sign-up right here on our site for one of our awesome web specials. Or feel free to give us a call at 503-658-3100 if you have any further questions. US World Class Taekwondo - Happy Valley hopes to speak with you soon!

Get Started Start Training Today