Karate international building Leaders in Windham since 2002
Karate international has Classes in Windham, Perfect for Kids, Teens, and Adults Martial Arts Lessons.
Who we Are And why You Should Train Here
At Karate International, karate is about more than learning techniques — it’s about helping people grow.
We’re a community-based karate school where students of all ages build confidence, focus, and discipline through structured movement, repetition, and encouragement. Families searching for karate schools near me often find us because they want something positive and meaningful — and they stay because they see real changes.
Our classes are intentionally designed to support how kids (and adults) actually learn. By using repetition, balance work, and clear routines, we help students strengthen the brain-body connection, improve focus, and develop self-control in a way that feels natural and fun.
We believe progress happens best when students feel supported, challenged, and proud of their effort. That’s why we focus on strong foundations, steady improvement, and celebrating growth — not rushing or shortcuts.
Karate International is a place where students feel welcomed, families feel confident, and effort is always encouraged.
If you’re looking for a karate school that blends structure with heart, you’re in the right place.
Shihan Joe Costa (Owner)
In 1991, Shihan Joe embarked on his martial arts journey, reaching a milestone in 1993 with the achievement of his Black Belt. Seeking deeper knowledge, he studied under Evan Pantazi, attaining a 3rd degree Black Belt in 2001. The same year, he delved into Kyusho Kenpo under George Dillman’s guidance.
Fueled by passion, Shihan Joe and his wife, Sensei Shannon, founded the Karate International of Windham in 2002. Recognition came in 2015 when he received the prestigious 6th degree Black Belt from The Kenpo Council of Grand Masters and Robert Lamattina. Currently holding a 7th degree Black Belt under Professor Duncan, Shihan Joe’s expertise also extends to a Black Belt in the Super Foot Bill Wallace System, showcasing his genuine love for martial arts as he imparts knowledge and inspires.
Sensei Shannon
Sensei Shannon started practicing Kenpo at the age of 9 with her four sisters. She has worked hard to reach the rank of Sandan, or 3rd Degree Black Belt. She believes that Martial Arts teaches more than just a sport- its a way of life that can transform people into confident, successful leaders. Sensei Shannon has personally experienced this transformation herself, going from quiet and introverted to confident and successful. With her experience, she hopes to inspire and guide her students to become the successful leaders of tomorrow.
Miss Sarabeth
Sarabeth’s martial arts journey shows it’s never to late to start – or finish something you started. Sarabeth began training in Shaolin Kempo karate at the age of 9, but needed to stop due to physical health issues after she received her brown belt. After spending many years kickboxing and regretting that decision, she went back and received her black belt in Kenpo at KI of Windham as an adult.
After this success, she set her sights on new goals including finishing Martial Arts instructor training with MATTac, and becoming a CPT, as well as working toward her next rank. When she’s not helping on the mat, you’ll find her out front in her second role as program director.
Mr. Joey
Mr. Joey is truly a dedicated Martial Artist with a life-long passion for his craft. He has been honing his skills since childhood and grew up immersed in the Dojo culture. As a testament to his hard work and determination, he currently holds the rank of 2nd degree Black Belt.
Mr. Joey’s infectious enthusiasm and genuine love for teaching make him a popular teacher among his students. He takes joy and satisfaction in seeing his students progress and grow in their own martial arts journeys.
Aside from his dedication to the martial arts, Mr. Joey is also serving his country as part of the NH Army National Guard. Currently, he is deployed in Kuwait, where he continues to serve with honor and distinction. His students eagerly await his return, knowing that he will have much to share upon his homecoming
Mr. Raon
Mr. Raon has been training at Karate International since he was 10 years old. He hold the rank of 1st Degree Jr. Black belt.