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InSeng Taekwondo
4.8 ★★★★★ 20 Google reviews · Taekwondo school in Boulder, Colorado
Style / system: Olympic / World Taekwondo — based on the school's own site and student reviews. Taekwondo systems (Olympic/World Taekwondo, ITF, and ATA/Songahm) differ in forms, sparring rules, and tournaments; if lineage matters to you, confirm it with the school. ATA vs WT vs ITF, explained →
Affiliated school — reviews and the school's own info point to a recognized taekwondo organization or franchise (think ATA Martial Arts, Kukkiwon certification, World Taekwondo, or ITF). If credentials matter to you, ask which association the school belongs to and where the head instructor earned their black-belt (dan) rank and certification.
Plan your first class
- Free trial or intro class most schools welcome new students with a free trial or intro class — check their site or give them a call to book your first session
- Kids & teens classes kids and teens taekwondo classes (ages 3–12) — built around discipline, focus, confidence, and anti-bully skills
- Beginner-friendly all ages and levels welcome, including total beginners — you don't need to be fit or have any experience to start
- Sparring sparring classes, from Olympic-style to point sparring — controlled, gear-on training that builds timing and confidence at your own pace
- Poomsae & forms forms (poomsae) practice — the patterns at the heart of taekwondo and your belt testing
- Competition & demo team a competition and demonstration team for students who want to test themselves at tournaments and events
- Today see hours ·
- Website & schedule insengtaekwondo.com — book classes and see the live schedule
- Phone +1 720-925-9631
Hours
| Monday | 10 am–8 pm |
| Tuesday | 10 am–8 pm |
| Wednesday | 10 am–8 pm |
| Thursday | 10 am–8 pm |
| Friday | 10 am–8 pm |
| Saturday | 10 am–2 pm |
| Sunday | Closed |
The classes they run
“The coaches are world-class professionals — very patient and truly supportive with both kids and adults.”
“I’ve been training with David for many years, starting when he first began coaching me in high school.”
“I’ve been training here in the adult program for about nine months and it’s been wonderful.”
“Highly recommend for anyone looking to stay active, learn self-defense, and be part of the great community that Master David and Master Jip are building.”
Other martial arts here
“Highly recommend for anyone looking to stay active, learn self-defense, and be part of the great community that Master David and Master Jip are building.”
What students say
“The dedication, discipline, and skill his athletes demonstrate on stage is a direct reflection of his world-class coaching.”
“Coach David was my head coach in college, and under his training, I went from a complete beginner (white belt) to earning my black belt.”
“Coach David always works tirelessly to move up the TaeKwonDo world and actively seeks out competitions and events in the community.”
“My son loves it and is always excited to come to class.”
“Coach David always works tirelessly to move up the TaeKwonDo world and actively seeks out competitions and events in the community.”
“The instructor David has partnered with for Inseng, Master Jip, adds even more to the school with her kindness and incredible experience in both competing and teaching taekwondo.”
From the reviews
I’ve been training with David for many years, starting when he first began coaching me in high school. In that time, I’ve watched his amazing journey from taking a small CU taekwondo team and building it into one of the most competitive university taekwondo programs in the country, and then going on to coach the US…
Highly recommend this place with their instructors. Lots of expertise and easy to bring my kid.
I trained under Coach David Lee for four years, while a member of the CU Taekwondo team. In that time, I also became teammates and friends with Coaches Cat and Ivan. Since then, as a journalist, I have continued to document their progress.
I learned from coach David for four years in college and he has created this dojang to teach Tae Kwon Do. Inseng is an incredible place that teaches discipline, hardwork, and finesse. Coach David always works tirelessly to move up the TaeKwonDo world and actively seeks out competitions and events in the community.
New to taekwondo? Start at InSeng Taekwondo
InSeng Taekwondo comes up as a beginner-friendly school — noted on their own site. If you've never trained or set foot in a dojang, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit or flexible to start — you get in shape by training, not before it, and instructors scale the intensity to you. Second, you won't be thrown into hard sparring — reputable schools build fundamentals (stances, blocks, kicks, and basic forms) for weeks, sparring eases in gradually and with gear on, and instructors keep it controlled and safe. Third, all ages and all levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most schools are happy to let you watch or try a class first, so reach out before you commit.
Your first taekwondo class at InSeng Taekwondo
Nervous about walking into a taekwondo school for the first time? Almost everyone is, and good instructors expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic stances, blocks, and kicks with a partner or on pads — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: loose athletic wear you can move in (or a dobok if you have one); you'll train barefoot on the floor. What to bring: water and a positive attitude — many schools lend a loaner dobok for a first class, so it's worth asking when you call. As you keep training you'll get your own dobok and belt, and sparring gear (mouthguard, headgear, and guards) once you begin sparring. Sparring eases in gradually, once your fundamentals and forms are solid. Arrive 10–15 minutes early to sign a waiver and meet the instructor. It gets easier fast — most people feel far more at home by their third class.
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