Family-Owned · Clinton, Massachusetts

Janice and Nathan Roseberry aren't newcomers to these mats — they've been training here since the very beginning. When the dojang opened in August 2004, they walked through the door just weeks later as students. Over the years they became instructors, mentors, and leaders within the school community.

When the opportunity came to take ownership in January 2022, it wasn't a business decision — it was a calling. They had over 21 years invested in this place, and they knew exactly what it could become.

Since taking ownership in January 2022, we've refreshed everything — new mats, a new name, and a renewed commitment to making this the best martial arts school in the region.  We renamed the dojang to Koryo Martial Arts — a name that reflects the Korean martial arts heritage at the heart of what we do, and the fresh culture of integrity that Janice and Nathan brought with them.

Our commitment is straightforward: every student who walks through our door deserves qualified instruction, a safe environment, and a community that has their back. We hold ourselves to that standard every single class.

We hold ourselves to the same standard we ask of our students. On and off the mats, we do what we say we'll do. 

Every parent who trusts us with their child deserves a school where safety is never a question. We take that responsibility seriously. 

We've been a part of Clinton for over 21 years. This isn't just a business — it's a relationship with our neighbors. 

Every student starts somewhere. We meet people where they are and guide them as far as they want to go. 

The foundation of every martial art and the first thing we teach — respect for yourself, your instructors, and your peers. 

We never settle for good enough. From curriculum to culture, we are always raising the bar.