Yi’s Karate Institute | Sewell, NJ — Learn from the Best. Feel the Difference.

At Yi’s Karate Institute in Sewell, NJ, students of all ages discover a welcoming environment built on respect, discipline, and personal growth. From Kids Martial Arts to Adult and Family classes, every program is designed to strengthen the body, sharpen the mind, and build lasting confidence. Led by Master C. S. Kim, our school has been empowering the Washington Township community since 1983 — one kick, one bow, and one lesson at a time.

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Yi’s Karate Institute | Sewell, NJ — Learn from the Best. Feel the Difference.

At Yi’s Karate Institute in Sewell, NJ, students of all ages discover a welcoming environment built on respect, discipline, and personal growth. From Kids Martial Arts to Adult and Family classes, every program is designed to strengthen the body, sharpen the mind, and build lasting confidence. Led by Master C. S. Kim, our school has been empowering the Washington Township community since 1983 — one kick, one bow, and one lesson at a time.

Get Started Now

Yi’s Karate Institute | Sewell, NJ — Learn from the Best. Feel the Difference.

At Yi’s Karate Institute in Sewell, NJ, students of all ages discover a welcoming environment built on respect, discipline, and personal growth. From Kids Martial Arts to Adult and Family classes, every program is designed to strengthen the body, sharpen the mind, and build lasting confidence. Led by Master C. S. Kim, our school has been empowering the Washington Township community since 1983 — one kick, one bow, and one lesson at a time.

Get Started Now
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About Us: Building Strength, Confidence, and Community Through Tang Soo Do

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At Yi’s Karate Institute in Sewell, NJ, everything we do is rooted in three timeless core values: Respect, Discipline, and Growth. We believe that true martial arts training extends beyond physical skill — it’s about building character, leadership, and confidence that last a lifetime. We stand for Character Before Rank, Family and Community, and Lifelong Learning, ensuring every student, from the youngest beginner to the most seasoned black belt, feels empowered to become the best version of themselves both on and off the mat.


Just as importantly, we stand against ego, negativity, and quitting. In our dojo, we believe that progress is earned through humility, consistency, and an open heart. As we like to say, “A true black belt isn’t measured by the color around their waist — but by the strength of their character when no one’s watching.” Whether you’re looking to help your child gain confidence, get fit yourself, or share something meaningful as a family, we invite you to experience Yi’s Karate Institute for yourself.

 

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Master C.S. Kim

Founder and Chief Instructor

THE SIX PILLARS OF GROWTH AT YI’S KARATE INSTITUTE – SEWELL, NJ

Building Stronger Minds, Bodies, and Connections Through Martial Arts Training

Self Defense Skills

Every student at Yi’s Karate Institute learns practical self-defense techniques rooted in traditional Tang Soo Do and adapted for real-world application. Training builds awareness, confidence, and the ability to stay calm and make smart decisions in any situation.

Increased Mental Clarity

Through focused drills, forms practice, and mindful repetition, students sharpen concentration and clear their minds of distractions. Each class becomes a mental reset — improving decision-making, memory, and focus both on and off the mat.

Stress Relief

Our classes offer a healthy outlet to release tension and recharge. Whether through focused movement, controlled breathing, or the rhythm of training, students leave each session feeling refreshed, grounded, and more centered.

Improved Physical Fitness

Every class at Yi’s is a full-body workout designed to improve strength, flexibility, endurance, and coordination. Students develop lean muscle, better posture, and lasting energy — all while learning powerful martial arts techniques.

Greater Self Confidence

As students set goals and earn new belts, they see firsthand how consistent effort leads to achievement. That success translates into everyday confidence, empowering them to take on challenges with courage and pride.

Community Interaction

Yi’s Karate Institute is more than a school — it’s a family. Students of all ages train together, encourage one another, and build friendships rooted in respect, teamwork, and shared growth.

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“True strength isn’t proven in combat — it’s built through the quiet discipline of showing up, improving, and never giving up.”

We Believe in the Power of Character


At Yi’s Karate Institute, we believe that who you become is just as important as what you achieve. Every kick, block, and form is an opportunity to practice patience, humility, and perseverance. Our instructors emphasize that respect and integrity are not confined to the mat — they should guide every action, word, and decision in daily life. By nurturing these values, we help students develop a moral compass that serves them far beyond their martial arts journey.

We Believe in Lifelong Growth


The journey at Yi’s Karate Institute never truly ends — it evolves. From the moment a student ties their first white belt to the day they earn their black belt and beyond, each step is a chance to grow stronger and wiser. We teach that progress isn’t about perfection but persistence — small, consistent efforts that create lasting transformation. Our community thrives on this mindset of continuous improvement, where every student, regardless of age or rank, is encouraged to keep learning, striving, and becoming better every day.

kids martial arts

Kids Martial Arts – Confidence Starts Here

At Yi’s Karate Institute, our Kids Martial Arts program lays the foundation for lifelong success through fun, focused, and disciplined training. Children learn the fundamentals of Tang Soo Do while developing balance, coordination, and respect for others. Every class helps them channel energy in a positive way, build confidence through achievement, and form strong habits that carry into school and home life. We don’t just teach kids how to defend themselves — we teach them how to believe in themselves.

adult martial arts

Adult Martial Arts – Strength, Focus, and Empowerment

Our Adult Martial Arts program offers the perfect balance of fitness, self-defense, and personal growth. Each class challenges you physically while sharpening your mental focus and resilience. Students experience an energizing full-body workout that improves flexibility, coordination, and endurance, all while learning practical skills for real-world protection. It’s not about being the toughest in the room — it’s about becoming the best version of yourself, one class at a time.

teens martial arts

Family Martial Arts – Train Together, Grow Together

The Family Martial Arts program brings parents and children together in an inspiring, team-driven environment. Families share the mat, learn side by side, and celebrate milestones together — turning martial arts into a shared experience of growth and connection. Classes are designed for all ages and skill levels, allowing each family member to progress at their own pace while supporting one another’s goals. It’s more than a workout — it’s quality time that strengthens bonds, builds respect, and creates memories that last a lifetime.

Frequently Asked Questions

See some of our most common questions and answers below, or call us at 856-582-0200

  • What age can my child start in the Kids Martial Arts program?

    Children can begin training as early as 4 years old. Our classes are structured by age and skill level, ensuring that each student learns in a safe, fun, and encouraging environment designed for their developmental stage.

  • What style of martial arts do you teach at Yi’s Karate Institute?

    We teach traditional Tang Soo Do, a Korean martial art known for its balance of striking, discipline, and character development. The training blends classical techniques with modern fitness and self-defense applications.

  • Do I or my child need any prior experience to start?

    Not at all! Our programs are designed for complete beginners as well as experienced martial artists. Every student starts at their own pace and receives individual attention from our certified instructors.

  • How often should students attend classes each week?

    Most students attend 2 to 3 classes per week, depending on their schedule and goals. Consistent attendance helps students develop habits, improve faster, and maintain steady progress toward belt advancement.

  • What should my child wear to their first class?

    For the first few classes, comfortable workout clothes are perfectly fine. Once enrolled, students wear a traditional uniform (dobok), which helps promote focus, discipline, and unity in the class.

  • How does the belt system work?

    The belt system represents a student’s progress in skill, knowledge, and personal growth. Students test periodically for new ranks, with each belt earned through dedication, consistent effort, and demonstration of strong character.

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Why Choose Yi's Karate Institute in Woodbury Heights, New Jersey

Expert Instruction with Proven Experience

Led by Master C. S. Kim, an 8th-Degree Master Instructor with decades of teaching experience, every class is guided by professionalism, safety, and genuine care. Students benefit from personalized attention that helps them grow in skill, confidence, and character at every level.

Programs for Every Age and Experience Level

Yi’s Karate Institute offers Kids, Adult, and Family Martial Arts programs designed to fit every stage of life. Whether your goal is self-defense, fitness, focus, or family connection, our classes provide the perfect blend of challenge, structure, and support.

A Positive Community That Feels Like Family

More than a dojo — Yi’s Karate Institute is a community where students encourage each other and celebrate growth together. Families in Sewell and Washington Township love the welcoming environment that promotes respect, teamwork, and lifelong friendships.