Cornerstone Martial Arts
About
Cornerstone Martial Arts offers comprehensive training in MMA and karate disciplines, supported by a diverse team of experienced instructors. The coaching staff includes multiple black belts across various martial arts, with specialties ranging from Tang Soo Do karate and Krav Maga to Brazilian Jiu-Jitsu and Muay Thai. This breadth of expertise allows the gym to provide well-rounded instruction that draws from many different styles, focusing not just on techniques but also on health, fitness, discipline, and self-control.
reviewsWhat Members Say
Members consistently praise the kind, patient instructors who excel at engaging students of all ages and abilities. Reviewers highlight how the gym creates a safe, welcoming environment where injury prevention is prioritized and students can push themselves beyond their perceived limits. Parents specifically mention how well instructors interact with children, making training both educational and fun while building confidence and focus. Multiple reviewers note that families can train together here, creating unique bonding experiences through shared martial arts practice.
rate_reviewGoogle Reviews (5)
Lily Martin
7 years ago
I am currently a brown belt here. The instructors are very kind and know how to interact with kids. I have lots of fun here! Totally recommend this place for any kid interested.
Douglas Briggs
5 months ago
Master Kloss has been a friend and teacher for well over 25 years - he has been patient and kind and a great help - both my son and I have studied with him for many years - a great instructor with a solid curriculum teaching drawing from mamny different styles - more than just punching and kicking he also teaches health, fitness, discipline, self control - I fully recommend his program for anyone either beginning or well versed in martial arts
Eric Stephenson
5 months ago
This is the place to be. Want your kids to learn and have fun? This is the place. Want to give them focus and confidence? This is the place. Want to give them an opportunity to truly push themselves to places they didn’t think they could reach? This is the place to go. How about a place for you to join them in the fun, where you can create unique bonding memories? CORNERSTONE IS THE PLACE!!! All 3 of my boys have spent so many wonderful moments with the amazing instructors and staff. I even joined them. Seriously, check them out and give them a shot! You won’t regret it!
Jeff Heim
5 months ago
I’ve had the chance to take a couple of lessons at Cornerstone Martial Arts, and I was really impressed by the professionalism of the staff. Their focus on safety and injury prevention stands out — it’s clear they care deeply about their students’ well-being and progress. Everyone I met was humble, respectful, and genuinely passionate about teaching. A great environment for learning martial arts, no matter your experience level.
Marti Williams
5 months ago
Fantastic karate studio! My kids went here starting when they were about five years old and then later my husband and I joined. They do a great job with engaging and teaching all ages and abilities. Highly recommend!
Contact
206 Lantana Dr, Hockessin, DE 19707, USA
scheduleHours
Monday: 4:30 – 8:00 PM
Tuesday: 4:30 – 8:00 PM
Wednesday: 4:30 – 8:00 PM
Thursday: 4:30 – 8:00 PM
Friday: 4:30 – 8:00 PM
Saturday: 9:00 – 11:00 AM
Sunday: Closed
groupCoaches & Instructors
George Maybroda
Owner, Head Instructor
4th Degree Black Belt
Started Martial Arts training at age 12 at Diamond State Tae Kwon Do.
Jackalynn Brannan
Owner/Head Instructor of Evolution Krav Maga
Krav Maga Black Belt, Fit to Fight Certified, 2018 WKA Champion, Muay Thai Kru, BJJ Purple Belt
Owner/Head Instructor of Evolution Krav Maga Delaware. Kickboxing amateur fighter and champion. Trained under Ajarn Buck Grant.
Chad Everett
Krav Maga Instructor
Krav Maga Blue Belt, EKM Certified Coach, Vai Copoeira Yellow/Green Belt
Krav Maga Instructor and certified coach. Background in Copoeira and fine arts education.
James Walsh
Krav Maga Instructor
Krav Maga Blue Belt, EKM Certified Coach, Kempo Karate Black Belt, Aki-Jitsu Black Belt, BJJ Blue Belt
Krav Maga Instructor with background in Kempo Karate, wrestling, Tang Su Do, Aki-Jitsu, and Brazilian Jiu-Jitsu.
Grace Diehl
Krav Maga Coach
Krav Maga Green Belt, EKM Certified Coach, BJJ Blue Belt, Muay Thai Apprentice L2, Certified Yoga Instructor, Personal Trainer
Krav Maga Coach with training in BJJ, Muay Thai, yoga, and personal training.
Robbie Holt
Instructor
Dedicated martial artist with over two decades of experience, starting as a child at the Korean Martial Arts Institute.
Rob Kloss
Owner, Head Instructor
6th Degree Black Belt in Tang Soo Do Karate
Started training in Tang Soo Do karate in 1984, became a full-time professional in 1990. Senior master at Hockessin’s Korean Martial Arts Institute.