Our Story
Where S1K Began
Source One Karate School opened its doors in Plano in 1989, founded by Coach Ralph Machio on one simple belief: that martial arts is one of the most powerful ways to build confident, focused, and disciplined people. What began as one coach's mission has grown into a community that has trained more than 8,956 students across Plano, Allen & Frisco.
We teach authentic Muay Thai the right way, for kids as young as four all the way through adults. Our background-checked, experienced coaches do far more than teach striking. They learn every student's name, celebrate every win, and help each person discover exactly what they are capable of, on the mat and off it.
