Theodorou Academy of Jiu Jitsu, Inc. is owned by Nick Theodorou. From 1990 to 2001, Sensei Theodorou was the head instructor of the self-defense program at Boston College in Chestnut Hill, Massachusetts. During that time, he trained over 1,100 students in realistic self-defense techniques. Sensei Theodorou has operated a school in Watertown, Massachusetts since 2001, teaching adults and teens practical and effective street self-defense.

The school relocated to its present facility in Watertown in 2001 with a special emphasis on adult and teen education. Teaching out of the Tumblekids gymnastics facility, our school provides our students with one of the largest, most comfortable and safest matted areas in the Boston metro vicinity.

Introduction to the Theodorou Academy

Sensei Nick's test for his 6th degree black belt. 


WARM UP - Our classes begin with a variety of warm ups and fitness conditioning drills designed to help get you ready for the remainder of the class in a fun and challenging way. New students are encouraged to do what they can and are never forced to do more than is comfortable. Over time, the student's level of conditioning will increase.

DRILLS - Each class will have drills related to fundamentals: for example: stances, falling, blocking and striking. Students will work with different formats, equipment and techniques to learn and improve upon their street fighting strikes. We vary the drills class to class to keep things interesting and fun.

DEFENSE TOPIC - Next, we provide a topic of the week where the theme of the Jiu Jitsu techniques taught will center around a particular response, assault or subject. This is a great way to see variations of the theme throughout the week.

BELT TECHNIQUES - Finally, we end each class with the individual student learning specific techniques for their skill level. During this section, a student works off of a set curriculum preparing for his promotion to the next belt level.

SENSEI NICk Theodorou

Sensei Theodorou is a 6th degree Black Belt in the Japanese martial art of Hakko Ryu Jiu Jitsu. He began his martial arts training in the early 1980’s practicing Shotokan karate, Chinese Kenpo and kickboxing. Then in 1985, Sensei Theodorou began training in American Jiu Jitsu (Hakko Ryu) directly under O’Sensei Joe Puleio, achieving the rank of Shodan (1st Degree Black Belt) in 1989. During his nearly 30 years of martial arts training, he has studied American Jiu Jitsu (Hakko Ryu), Philippine stick and knife fighting, aikido, judo, grappling and karate. A dedicated instructor, he has promoted over 40 students to the rank of Shodan (1st degree black belt), fourteen to the rank of Nidan (2nd degree), eight to the rank of Sandan (3rd degree) and two to the rank of Yodan (4th degree). Click here for a list of black belts that have promoted over the years. Sensei Theodorou is an expert and specialist in hand-to-hand combat, joint locks and weapon defense.


If realistic defense usable on the street is what you’re looking for, this is the place. The instructors are patient, and the training will improve your body, mind, and confidence.”