Bringing Expert Martial Arts & Fitness to Helotes, San Antonio, and Beyond

Dedicated instructors who are passionate to seeing through the progress of the students. Our oldest 2 children have accomplished black belt through Master Lopez's program. With the experience we have had we continue with our 6 year old on her journey to be like big brother and sister. We had moved after their accomplishment but for our youngest, to do this we now travel 40 minutes to RSK for what we know is quality instruction. Totally worth it. Highly recommend.

My daughter has been attending a tumbling class at RSK and it has been a fantastic experience from start to finish. The gym is well-maintained and clean. Both the staff and fellow students are friendly and encouraging. Coach K's enthusiasm and encouragement creates a positive and motivating atmosphere! I highly recommend giving RSK's tumbling class a try.

We've been attending RSK for several years now. Such a great studio with friendly instructors and staff! Studios are clean and the curriculum is great!

My son has loved it so much. He had to step away for a little bit for a procedure and he missed it so much. The instructors are amazing and the best part is they want their students to learn the foundations. They do not just give away belts. They want to make sure they are ready for it. Nothing but positive things to say. We love it.

Retro Sport is a hidden gem! A friend recommended it for tumbling but my boys immediately wanted to sign up for karate. We've done tumbling a couple other places and weren't thrilled in the past. RSK has been absolutely fabulous and very affordable. We've LOVED the instructors and staff. They are all seriously so kind and patient! Their joy is contagious. We've been very happy with the amount of attention, technique and fun in their classes.

Our son started attending RSK in 2021 and we couldn't be happier with our decision to choose RSK. We love Masters Lopez and Gunn, they are dedicated to the success of each and every student. Every instructor and Ms. Lisa at the front has always made us feel like family! Since 2021, our daughter has also joined and as of this year, so has my husband. They truly offer a class for everyone, no matter the age or skill set!

There are so many great things to say about RSK. The owner, instructors, and office manager are all qualified, kind, and professional. The parent portal is incredibly easy to navigate, the studio is clean, and the AC is always just right. My daughter's confidence has grown so much since starting at RSK. I love watching her develop a sense of self with each new skill acquired. Our family loves this place.

We love it here at RSK! Our daughter loves the tumbling program (Coach Kyra is awesome!) and our son started with the knee high ninjas, and has since worked his way up, currently, to an orange belt. The coaches here are patient, compassionate, and push the kids in the best way.

I have two children that attend Retro. The place is amazing. The attention to detail and the kindness of the instructors is next to none. When we moved, we had to find another karate facility and are very fortunate we landed here because they raised the bar.

Amazing owner and instructors! They really care about their students and teach them a high level of karate plus so much more. Definitely recommend this organization!

The master and staff are very professional and friendly to kids. My daughter has been there for 2 years, she loves karate b/c the coach and funny class.

My son been going to RSK for a bit over 3 years now. He started when he was three and they have helped him learn to love the martial art. Each and every one of the instructors cares for their students like their own kids. We couldn't be happier with the way they handle discipline in a very age appropriate approach!!

I cannot say enough positive things about Master Lopez and the rest of the staff here. Professional, passionate, hardworking, and fun environment. We love it here.

Such professional service and excellent, positive, experienced karate teachers. My son loves coming to his class every week and activities are always varied. Love it!

This place has been such a blessing during a pandemic for my son. We've been here for almost a year and my son has learned so much. All the instructors are great and patient with the kids.

Good training and discipline for my kids. These are life lessons.

We have been going to RSK for over a year now, and love it. Master Lopez is wonderful and great with the young kids! We recommend RSK anytime someone asks about Karate! We are extremely happy

Master Lopez is an amazing and PROFESSIONAL INSTRUCTOR. I look forward in joining your Schools Family.

Master Lopez is so patient with the students, yet enforces proper form. Not only are they learning karate, but also life lessons during class.

We love RSK! My son has been going to their after school program since the beginning of the year. We found this option to be much better for our son for after school care since he's getting 2 hours of karate instruction instead of sitting around doing nothing. Plus he's learning a skill and self defense. Highly recommend Master Lopez and RSK!!