Concord Self-Defense Academy

Concord Self-Defense Academy Providing self-defense instruction and specialized seminars for adults, teens, and children. Seminars are available outside of business hours.

The Concord Self-Defense Academy offers self-defense training for adults, children, and families, as well as private lessons, and specialized self-defense seminars for groups and individuals. We teach two traditional Japanese martial arts, Seirenkai Karate and Seirenkai Jujitsu. Senseis Len and Johanna Glazer have over 50 years of collective martial arts experience. As a martial arts family, we be

lieve that working, training, and playing together builds family bonds, trust, and respect while learning personal safety. Martial arts training not only promotes an active and healthy lifestyle, it also provides a fun activity that families can do together. The Concord Self-Defense Academy is part of the International Seirenkai Organization and is connected with a network of other dojos throughout the region. Seirenkai dojos maintain a clear set of guidelines pertaining to etiquette, ranks and responsibilities, as well as a tightly knit and warm family of diverse people. Our members include men, women, youths and children from all backgrounds and all walks of life who appreciate the values of our traditional arts. Discrimination of any type is not allowed in our dojo or the others in our network, and therefore we attract considerate people who enrich the organization through their participation as students and teachers (sensei). The Concord Self-Defense Academy does not emphasize competition as so many martial arts systems now do. Instead, our youth and adult members tend to value learning and self-improvement rather than “winning at all costs.” As a result of our emphasis on “doing one’s best,” the environment in our dojo fosters an ethic of “mutual welfare and benefit.”


Since 2008 the Concord Self-Defense Academy has worked in conjunction with Emerson Hospital's Integrative Health and Wellness Center. As a result of this partnership, we have been able to expand our classes and increase our offerings to the community at large. Members of the Concord Self-Defense Academy endeavor to follow the Codes of Bushido in their training and in their daily lives. These ancient Samurai codes include: benevolence, courage, honor, justice, loyalty, politeness and veracity.

This is a time full of life's transitions: moving, heading off to college, or taking a gap year abroad.  Make sure you (...
05/25/2026

This is a time full of life's transitions: moving, heading off to college, or taking a gap year abroad. Make sure you (or your loved one) is equipped for all that life may bring in the journey ahead.

The Concord Self-Defense Academy has been offering Self-Defense seminars several times a year for several decades. Join us at one of the dates listed below and contact us for more information at [email protected].

We hold various Self-Defense Seminars throughout the year. If you are interested in hosting a seminar for your group, please contact us, let us know what you are looking for, and we can organize a seminar for you and your group.

We were thrilled to start our winter session in our new location. Thanks for everyone's support and help in this transit...
01/12/2026

We were thrilled to start our winter session in our new location. Thanks for everyone's support and help in this transition. We are so grateful for the CSDA community!

It was a bittersweet day for the Concord Dojo. We had our last Sunday Jujitsu class at the Emerson Wellness Center.  For...
12/15/2025

It was a bittersweet day for the Concord Dojo. We had our last Sunday Jujitsu class at the Emerson Wellness Center. For the last 18 years we've had a great partnership with Emerson and we're saddened that they are no longer open for Sunday classes. Fortunately, Karate classes can continue with Emerson on Thursday nights.

A dojo is so much more than the space in which the Sensei teaches and we are so proud of the dojo and the community we've built over the past two decades. We are looking forward to finding a new home for our Jujitsu classes. We are excited to start a new chapter with the amazing students of the Concord Self-Defense Defense Academy.

Address

310 Baker Avenue
Concord, MA
01742

Opening Hours

Thursday 7:30pm - 9pm
Sunday 2pm - 5:30pm

Alerts

Be the first to know and let us send you an email when Concord Self-Defense Academy posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The School

Send a message to Concord Self-Defense Academy:

Shortcuts

Share