For kids ages 8–12 who are ready to grow stronger—inside and out

The Junior Ninjas classes are high-energy, skill-building sessions that are as fun and exciting as they are focused and meaningful. Kids get to kick, strike, sweat, laugh, and level up—all while developing focus, discipline, and unshakable confidence.

Personalized instruction for every child

Our specialty at Boulder Karate is our weekly semi-private lessons—and they make all the difference. Every Junior Ninja receives 30 minutes of one-on-one or small-group coaching with one of our skilled instructors. This time allows us to work closely with each student’s unique abilities, techniques, and mindset.

We help them set goals, build confidence, and overcome challenges with consistent, individualized support. It’s how we bring out their best—and help them grow faster.

Character development through martial arts

Junior Ninjas is where we start digging into the deeper lessons of martial arts and applying them to life. Your child will learn that good character means doing the right thing when nobody’s looking. These are lessons that stick with them for life.

This is a fantastic time in a child’s development—right before the teen years begin—and we want martial arts to be a strong, positive foundation they can lean on as they grow.

Real skills, safe training, and serious fun

Recommended for ages 8–12, our Junior Ninjas train in focused 60-minute increments. Each class includes combat exercise training, self-defense skills, and dynamic partner drills that turn energy into purpose.

They’ll build strength, flexibility, and coordination—all in a safe, encouraging environment. We make sure every child feels supported as they work toward their next rank.

And while they’re developing serious martial arts skills, they’re also having a blast.

Big transformations in a short time

On average, Junior Ninjas attend a couple of times per week. Within 6–12 months, you’ll notice the change: better focus, more confidence, and a child who carries themselves with purpose. Our students grow not just as martial artists—but as leaders in their homes, classrooms, and communities.

What’s included in the Standard Junior Ninjas Program:

• One weekly semi-private lesson (30 min of personalized attention)

• Access to all five Junior Ninjas Group Classes

Once you enroll, our instructors will contact you to schedule your child’s weekly semi-private time.

Ready to help your child build strength, confidence, and character?

Try the most personalized and engaging martial arts program for kids in Boulder.