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Jiu-Jitsu is the art and science of control (immobilization),
that leads to your opponent’s submission (joint locks / choke holds)

At Theory Jiu-Jitsu Studio, we are dedicated to the practice and propagation of Jiu-Jitsu, the martial art that masterfully blends control, immobilization, and submission techniques to achieve victory over an opponent. Our experienced instructors emphasize teaching the techniques, systems, and overarching principles that define this captivating grappling art.

Our training environment strikes a delicate balance between safety and challenge, fostering a fun yet disciplined atmosphere where individuals can thrive. At Theory Jiu-Jitsu Studio, we are committed to helping you reach your full potential, creating a unique community of individuals united by a team dedicated to your success.

Through the practice of Jiu-Jitsu, we equip our students with the tools necessary to master their mental, physical, and emotional states. Consistent training allows for the development of valuable life skills, such as problem-solving under pressure, humility, and collective mastery.

We take immense pride in being part of an art form that has transformed the lives of millions, and we welcome you to join our ever-growing community at Theory Jiu-Jitsu Studio. Embark on a journey of self-discovery, discipline, and camaraderie with us,
and experience the profound impact of Jiu-Jitsu on your life. 

Welcome to Theory Jiu-Jitsu Studio!



Innovative Process

At Theory Jiu-Jitsu Studio, our objective is to consistently push the boundaries of innovation. We believe in liberating ourselves from traditional mindsets and pursuing the most effective truths within the realm of Jiu-Jitsu. This forward-thinking approach allows us to stay at the forefront of the martial art and share cutting-edge techniques with our students.

Inquiring Mindsets

Our instructors adopt the role of “moderators” during classes, promoting critical examination of techniques and encouraging students to analyze the content. We foster a culture of curiosity and exploration, inviting students to seek new ways to optimize their learning process. This collaborative approach empowers students to take ownership of their development and contributes to a dynamic learning experience.

Inclusive Environment

At Theory Jiu-Jitsu Studio, we take pride in cultivating a training environment that welcomes students of all backgrounds and skill levels. Our inclusive atmosphere enables individuals to work productively with one another, fostering camaraderie and mutual support as they strive to achieve their training goals. By embracing diversity and promoting unity, we create a nurturing space where every student can thrive and excel in their Jiu-Jitsu journey.


Organized Curriculum

At Theory Jiu-Jitsu Studio, we provide a structured curriculum that includes technique and skill guidelines for advancing to your next rank. Our comprehensive approach ensures that students are equipped with the necessary training and resources to reach their goals, never feeling lost or uncertain about their objectives.

World-Class Content

Our focus is on developing a world-class grappling game for our students. By staying up-to-date with the most effective techniques used at the highest level of competition, we ensure that our students have the framework to excel on any platform they choose. This commitment to excellence allows our students to stand out and achieve success in the world of Jiu-Jitsu.

Multi-Discipline Focus

We recognize the value of integrating various grappling disciplines into our training. Our curriculum incorporates elements from Judo, Sambo, Wrestling, Catch Wrestling, and Folkstyle Wrestling, enabling students to develop a well-rounded skill set and achieve maximum submission grappling proficiency. This multidisciplinary approach fosters versatility and adaptability, essential qualities for success in the ever-evolving landscape of martial arts.



Levi Van Stappen is the dedicated and passionate Head Instructor at Theory Jiu-Jitsu Studio. With nearly 20 years of experience in martial arts, Levi possesses a comprehensive understanding of the techniques, strategies, and underlying principles of Jiu-Jitsu. His mission is to impart his love and knowledge of this remarkable sport to others, assisting students of all ages and skill levels in achieving their full potential.

Levi holds a Brown Belt in Gracie Jiu-Jitsu and a 3rd Degree Black Belt in American Freestyle Karate. His teaching philosophy revolves around fostering a supportive and inclusive environment in which students can learn, grow, and enjoy themselves. Levi firmly believes in the potential of every individual to excel in Jiu-Jitsu, and his ultimate goal is to guide each student toward realizing their unique ambitions and aspirations.

When he’s not sharing his expertise on the mat, Levi enjoys spending quality time with his family, staying active, and continually honing his skills. 


His inspiring videos on YouTube have educated people around the world, in addition to his complete instructional library, “The Collection“.

Roy Dean’s martial education is well rounded, holding first degree black belts in Kodokan Judo and Aikikai Aikido, and third degree black belts in Japanese and Brazilian Jiu JitsuHe continues to be a student of Roy Harris, and is recognized as a black belt by the International Brazilian Jiu Jitsu Federation (IBJJF), with affiliated academies around the world.

He has written about his adventures in two books, “The Martial Apprentice” and “Becoming the Black Belt.”

We are very proud to be Roy Dean’s FIRST and ONLY affiliation in Wisconsin!