Quick Review: Ji Sung Taekwondo is far more than a martial…read morearts studio - it is an extraordinary community led by passionate, highly skilled instructors who build confidence, discipline, respect, and leadership in every child. From transformative classes to unforgettable birthday parties, the staff consistently goes above and beyond to create a positive, empowering experience for both children and parents. Detailed Review: Our family has known this taekwondo studio since my brother and I were children. Some of my fondest memories growing up were attending TKD tournaments with my parents and cheering my brother on from the sidelines. Life has certainly evolved since then - my brother and I now have families of our own, and while we may no longer jump five feet in the air to break boards with a single kick (or perhaps we still can!), one thing has remained constant: the exceptional community at Ji Sung Taekwondo. Over the years, much has changed, yet the studio's core values have remained unwavering. Ji Sung Taekwondo continues to cultivate confidence, resilience, discipline, respect, teamwork, cultural appreciation, and outstanding martial arts skills - all while creating an environment where children genuinely enjoy learning. Not every instructor possesses the rare combination of being engaging, encouraging, patient, and deeply invested in their students. Just as classroom teachers vary, martial arts instructors do as well. At Ji Sung, however, you will find highly skilled, compassionate, and remarkably dedicated instructors who consistently go above and beyond for every child. After researching numerous TKD studios, I can confidently say this is the most impressive team I have encountered. As a parent, my goal is to raise confident, respectful, and capable future leaders, and Ji Sung reinforces those qualities beautifully. One of the most impressive things about the instructors at Ji Sung Taekwondo is how intentional and attentive they are with every child. They consistently call students by name to keep them engaged and focused, model positive behavior through clear examples, and offer meaningful praise and encouragement that builds both confidence and accountability in the children. Master Sahar is truly exceptional! She has an extraordinary ability to connect with children and capture their attention through positivity and encouragement. Rather than focusing on negative behavior, she reinforces good choices and models expectations in a way children immediately understand. The students genuinely want to succeed under her guidance, and it is remarkable how quickly they become more attentive, respectful, and confident in her classes. Miss Joy is equally outstanding - attentive, uplifting, and incredibly knowledgeable. She takes the time to ensure students learn proper technique correctly and thoughtfully refines movements with patience and precision. Master Kim leads with expertise, attentiveness, and high standards. He notices everything, maintains strong discipline, and motivates students to perform at their very best while still making them feel supported and encouraged. We deeply appreciate him and the incredible community he has built. We recently hosted a birthday party at Ji Sung Taekwondo, and it was one of the best decisions we could have made. Master Sahar, Miss Joy, and Esther exceeded every expectation and completely impressed both the children and parents in attendance. Within just an hour, the kids learned technique, discipline, and respect - and by the end of the party, each child successfully broke their own wooden board. It was such a meaningful confidence-building experience, and the children left feeling proud, empowered, and excited. When our children attended their first trial class, my four-year-old daughter was extremely shy and hesitant to leave my arms or step onto the mat independently. By the very next class, she confidently ran onto the mat on her own, and at home she now responds to my requests with, "Yes, ma'am!" every single time. It is absolutely adorable and makes me incredibly proud. That transformation is entirely thanks to the warmth, encouragement, and patience shown by Master Sahar and Miss Joy, along with Master Kim's supportive guidance for parents. Thank you to the entire Ji Sung team for the extraordinary energy, heart, and dedication you pour into every class. Your positivity, teamwork, perseverance, and kindness create an environment that truly shapes children for the better. This is far more than a taekwondo studio - it is a community that inspires children to become stronger, more confident, and more respectful versions of themselves.

The instructors spent much time with my son and he just graduated to an orange belt. So proud of…read morehim. Thank you to the the whole Ji Sung team

My daughter loves going to Team Dragons after school. Master Lee is a great human, instructor and…read moreleader. He and his family and staff are kind, patient and very encouraging.

Master Lee is my son favorite instructor. We choose him after we tried 3 other places. My son want…read moreto sign up asap after FREE TRIAL.

A recently learned of the concept of "A Third Place." Coined by Ray Oldenberg, it's a social…read moreenvironment that is not home (first place) and not work (second place). He identified key characteristics of all third places. "They are on neutral ground and promote social equity by leveling the status of guests. Conversation is the main activity and the mood is playful. Strangers are welcome, and there are regulars who feel a piece of themselves is rooted in the space. They enjoy the same feelings of warmth, possession, and belonging as they would in their own homes." I know this is seriously corny, but William Kim's Tae Kwon Do Center is the best Third Place for families. You truly feel a sense of community when you are there. All the instructors are so good with the kids. I have personally seen how beneficial Tae Kwon Do is through my own 9-year old (who started in 2023 at 7). He has blossomed due in large part to Tae Kwon Do. Because I attend almost all of my son's classes, I've also witnessed so many other students excel. These kids learn discipline, respect, perseverance and many more valuable social and emotional skills. And even though the students are training hard during class, the classes are actually really fun! Even for parents just sitting and watching. In addition to being a great place for your kids, as a parent, you might find yourself connecting with other local parents who may even become close friends and trusted associates. Families have been sending their kids to William Kim's TKD for decades and for good reason. The center has deep roots in the Vallejo community. Third places like William Kim's are successful because of the people who volunteer and work there--especially the Kim family--who are committed to improving each students well being through the discipline of the art of Tae Kwon Do. Families continue to flock here because they can see and feel this commitment. Also there are not many places you can go to like this, where you see different generations, from gen alpha to millennial, gen x and beyond, socializing well and getting along with one another. Sidenote: My husband had been wanting our son to start Tae Kwon Do for years, since he participated in several martial arts when he was younger. He did extensive research before deciding where to start. He picked William Kim's because of Grandmaster Kim's excellent reputation (Grandmaster is a 9th Don!) And, even though we live further away in Cordelia, we believe the quality of William Kim's is definitely worth the drive to Vallejo.

My oldest asked to check out the TKD studio by the taco truck on Springs. I honestly didn't realize…read moreit was even there. We went to check it out and right away both my boys loved it. They had a 30 day trial to check it out and see if it was a good fit for us, even my husband decided to give it a try and joined the adult class. We are now a little over 2 years in and absolutely love it here. My husband and boys are now senior blue belts, half way to black belts. Going to this studio was the best decision we made for our family. Everyone at WMK is amazing and makes you feel so welcome. We are always bragging about our extended family! If you're considering it, you should just go in and give it a try. You won't be disappointed!

I've been bringing my son to Kumgang Taekwondo for since we moved to Mountain House and he has…read morelearned not only discipline, but self control and gained in his self-confidence. He respects us more and is very helpful around the house. Not only do they teach the skills for taekwondo, but they also do some meditation and talk to the students about respect and discipline. We will continue for many more years at this wonderful school.

From the owner: As a school, we develop a student in respect, self-discipline and leadership. We practice…read moretraditional taekwondo from Korea, through Kukkiwan, World Taekwondo. Our practices focuses on forms, self-defense, and sparring. We are a part of the North California Taekwondo Association and participate in competition. We accept ages 5 and older after assessment.

Heard about this dojo for a while now,since the first time it opened in Clayton started at $20 for…read morethe trial ,now it is $50 for 2 classes. After trial my daughter likes it, particularly the vibes there,Master Baek and staffs are very friendly. So decided to sign her up, I pay $250 a month for twice a week classes( 4 options for 4 difference classes) They do not accept cash,if you decide to sign up, Only direct deposit. And expects to 3-4% inflation after a year usually February. I KNOW EXPENSIVE right, NO! the lifetime experience, discipline, the skills that Master taught our kid is more valuable than anything, well for the price that I pay better be good ^^....so try it out today....come and see in person,bring your kid,make them busy.

Ji Sung Taekwondo the best place for my kids They enjoy…read moretheir training. The instructor are so great and positive.

My child has been here for 2+ years and it's been amazing and rewarding. The principles installed…read morein Taekwondo has benefited him in other areas of school, sports, and confidence. The instructors make it feel like it's one on once instruction. Overall, they care and make the students feel it as well! My family crosses the Benicia bridge for the dojo because it's been so great.

My son has been a student at Dae Han for nearly three years now, and from day one it has been a…read morewonderful experience!! The instructors and staff are simply amazing. My son has developed a deeper understanding of respect for himself and others and the importance of being accountable and challenging himself. I am so grateful for Dae Han!!

Recently, I was looking for a martial arts school for my daughter to help her build discipline,…read moreconfidence, and self-defense skills. We found California School of Martial Arts, and I was very impressed with the entire experience. It was a pleasure speaking with the head instructor -- he was extremely friendly, professional, and welcoming. The school has a very positive atmosphere, and everything appears to be organized at a high professional level. I can confidently say this is an excellent school for children and families who are looking not only for martial arts training, but also for discipline, respect, confidence, and personal growth. I would definitely recommend this school to other parents and families. Parent Igor Yun

From day one my son has enjoyed every class and he's always asking when is the next class. Great…read moreschool and the environment the kids get its amazing. I can already see some changes on my son's discipline and with more courage when trying new things in the past he will only tried once and will give up. Since he started taekwondo now he keeps trying and trying so thank you CALSMA for that. Overall highly recommend!!!

My son's been a part of Black Tiger for two years and absolutely loves it. The instructors have…read morehigh expectations but are also patient and caring. I appreciate the emphasis on focus, discipline, and hard work. There is also great communication with families. My son has participated in two local tournaments and an inhouse tournament, and the instructors made sure he was prepared.

We are loving this place. The teachers are patient and kind, with great energy and really engage…read morethe kids. Safety is a priority and they take it seriously both general safety and Covid safety. The classes are when I'm at work and I love that I can watch on Facebook and see my kid having a great time. I'm so happy we found the studio and my daughter is really enjoying her experience. This is definitely a business run on respect and integrity.

Our 6 year old has been attending Master Kim Tae Kwon Do for the past year, and it's been a…read morewonderful experience from day one. The program is top-notch, and the instruction is truly exceptional. Master Kim and the leadership team do an incredible job inspiring the kids, not just to improve physically, but to build focus, discipline, and self-confidence. It's been amazing to watch the growth both in and outside of class. If you're a family looking for a supportive and motivating environment to help your child thrive, we can't recommend this dojang enough!

i got my black belt and their service is so good and the master i so kind…read more -ethan -