Checkmate teaches self defense, mostly Jujitsu (small circle), Judo, some kick boxing and mixed…read moremartial arts training (separate classes / instructors). I've been training there for a few years, lost 50 lbs, and made a big improvement in my life. It is casual, informal, supportive, geared to the individual. Focus is on self defense that's reasonable, effective and safe. The head instructor has a 5th degree black belt, and his top student is a 2nd degree black belt, and with Manchester PD and fire arms instructor.

I just recently started taking classes here after looking online for quite some time. Not only do…read morethey offer a wide range of martial art styles, but each class is suited for people of any skill level! Everyone I talk to there has been going for years!!!! I can definitely see why. I look forward to each class and find I am more motivated and energetic. You will not be disappointed!!!

If you are looking for top-notch defensive training, look no further. They have a wide variety of…read moreclasses/courses for every ability. It's definitely worth your time!

I took my first class from Critical Defense Institute in 2017 after meeting Rob, the owner, on the…read morerange during a competition. The training I have received from Rob and his staff is amazing; their level of training an expertise is what everyone needs to be become proficient in the art of self-defense, both empty hand and firearms. Most recently, I took a rifle class, and it was nothing less than spectacular, even though it rained the entire day!

My 4 year old son started classes there a few months ago and we couldn't be happier with this…read morestudio. Sensai Ed is great with all of the kids in the class and has helped teach my son a lot of great values along with helping him focus better (that's a challenge for my son). They also do a monthly party for the kids and the parents get to have a night out. The staff is great and the other families that attend are great as well. I highly recommend checking it out!

My 10b is thriving at SW. They teach hands-on techniques, bully prevention, playground defense and…read moreweapons training. I would describe our dojo as old school, character building and Sensei Gene is invested in my son. They do a lot of free sessions for the community as well.

I recently attended a women's self-defense workshop at Seacoast Warriors and in just 2 classes, I…read morehave already learned so much. Their instructors are professional and knowledgeable and most importantly - patient! I have limited experience with martial arts, but their team is willing to help people of all ages and experience levels. I highly recommend them!

Would recommend this place to any lady in Boston. But make sure you understand that there are 10…read moremodules, so you shouldn't expect to become a self-defense expert in one class. What I enjoyed the most was actually not the 'fighting' part, but the part where we sat in front of the whiteboard and discussed how to best avoid the attack. Will be attending the other modules for sure. Wake up at 10am on Saturday, your safety is worth it. PS - If you have a car, I recommend driving here. Parking is free, but T is a little far and the walk is unpleasant.

Good ratio of instructors to students. One on one today.Clean studio.read more

Very friendly and knowledgeable staff, great price and unlimited classes, relaxed atmosphere and…read moreone on one training.

Jerry was knowledgable and prepared us to deal with all types of situations to protect ourselves…read more Everyone should use him!

From the owner: Best self defence teacherread more

Owner was very helpful on the phone and willing to accommodate our schedule. We couldn't make…read morethings work in the end, but we appreciated his time & effort!

The classes fit my schedule and the instructors are respectful and happy to discuss accommodations…read morefor any special needs. The two week free trial gave me a chance to see if the courses, instructors, and school culture worked for me. I've made progress in a short time. I am an adult learner taking Tai Chi and Muay Thai, and I enjoy both classes for different reasons.