This is a martial arts school, not a gym floor
Jinmoo, in Concord, teaches Korean martial arts - Taekwondo plus Kummooyeh (Korean sword and archery) - under Master Woo. There's no treadmill-and-dumbbell room described anywhere in these reviews. So if you want a general fitness gym, this isn't your listing. If you're weighing a Taekwondo school for yourself or, far more often here, for your kids, the reviews are genuinely useful.
What families describe
The reviews split between long-tenure students and parents of children, and both praise the instruction and the man running it. A March 2022 reviewer laid out the curriculum plainly: "Excellent Club that teaches both: Taekwondo (Combat sparring, Sport sparring, Poomsae) [and] Kummooyeh (Korean sword and archery). Master Woo is one of the most genuine Masters I have met both as a person and an instructor." A student of a decade wrote in February 2025, "I've been a student at Jinmoo Taekwondo for 10 years and taekwondo has been a big part of my life... Master Woo has guided me and my classmates through countless hours of training."
Parents echo the structure. A February 2026 review liked the grading path: "he has been training in Taekwondo... for almost 2 years. He loves every class, and the best part is that they have a grading system for each level, which motivates him to do his best." Another parent tracked a son from Year 5 to Year 11 at the club. One reviewer even points you to the practical detail: "Check out the website for timestable for various classes."
What a perfect 5.0 does and doesn't tell you
The average is 5.0 across 25 ratings. Spotless - but read who leaves it. A martial arts school with a grading system tends to keep motivated families and lose the mismatched ones quietly, so the people still around to review are, by design, the ones it suited. That's not a knock; it's how to read the number. You're seeing the voices of students who stayed for years, which tells you a lot about retention and little about whether the first month clicks for you.
I'd also note the shape: several reviews cluster in February 2025. That's easy to over-read. A grading event or an end-of-term push naturally produces a few happy posts at once, so I treat that batch as one data point, not three.
What's missing
No review states a class fee, a beginner trial, or age minimums. The listed hours run afternoons and evenings on weekdays plus Saturday mornings, which fits a school schedule, but the actual class timetable lives on the website, not here. For a kids' program, age groups and pricing are the first questions, and the club can answer both directly.
Who it's not for
Anyone after open-gym fitness training. Anyone who wants to drop in casually rather than follow a graded, instructor-led curriculum.
FAQ
What does Jinmoo teach?
Taekwondo (patterns, sparring, board breaking) and Kummooyeh, the Korean sword-and-archery discipline. It's a martial arts school, not a fitness gym.
Is it good for children?
Most reviews are from parents, and they consistently praise the coaching and the level-based grading that keeps kids motivated. Confirm age ranges with the club.
What are the class times and prices?
Weekday afternoons and evenings plus Saturday mornings are listed, but the full timetable and fees are on the school's website. Contact them for current details.