Your first criteria for choosing a teacher should be whether that teacher is a nice person. John Keim is a very nice person.

My kid loves this place. Instructors are all very engaged and helpful. Not dictators but still able to teach respect and discipline. John is the owner and is always there....Ive seen him single-handedly changes shy kids, terrified to start, frozen in the lobby into eager participants in a matter of a few minutes on many occasions. Amazing place!

Very family-friendly place! The dojo is always clean and the instructors are energized and inspiring. I have watched my stepson blossom since starting karate here - he is much more focused and respectful at school and home, more confident in his everyday life, and is more coordinated. His training also helped him to stand up to a bully in his class last year! Its a great place to train for many reasons. I cant wait to send my daughter to Z-Ultimate when she turns 4!

Great involvement with the community. Gives some womens self defense. Affordable compared to other similar places. Everyone is very inviting upfront and informative.

The z ultimate Broomfield location is the best instruction I have received in my quest for a black belt in the kempo martial arts! I am very pleased with the friendly staff, and students at this location! I would highly recommend this dojo for training in the martial arts!

I love Z Ultimate so much I want to marry it!

Great instruction people still care and it shows