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.