Together We Can Do Great Things

We believe in a bright future and our ability to build it together.

About us

We're dedicated to your progress!


We help people from all over the world go from feeling confused and stuck with their horse to feeling confident and moving forward

We believe:

  • No one should have to face with unnecessary suffering because of unaddressed natural asymmetry.
  • Every rider and horse deserves balance in body, mind, heart and soul, and a great working partnership together.
  • You and your horse are designed for more.

We help you transform into the next-level version of yourself.

Then, you cannot help but make a positive difference for your horse.

You can even be the change you want to see and have a positive impact on the people around you.

Why we do what we do

The meaning behind our mission

We believe that the world needs riders who have an thriving relationship and empowering life with their horses.

A world without unnecessary suffering for horses and riders due to unrecognized natural asymmetry.

That's why we want to share with you the concepts, tactics, and STrategies that helped riders across the world to overcome struggles, plateaus, setbacks, and challenges with their horses.

With Straightness Training we'd like to inspire people to do the things that inspire themselves and their horses! We deeply believe that you too can turn things around with Straigtness Training (ST).

And guess what? Even if you're already rocking it with your horse, we're here to help you take things to the next level and enjoy a fulfilling life with your horse along the way.

Regardless of your dreams or obstacles, you can be part of a community where horses and riders thrive and inspire each other every single day!

We believe in "Together Is Better" and thanks to the internet we can do great things together!

We can build a world in which the vast majority of riders go home every day feeling fulfilled by training their horse!

We believe in a bright future and our ability to build it together.

In the Straightness Training Academy, you will connect with like-minded STudents from across the globe. No need to worry about being "the only one" doing Straightness Training in your riding arena, barn, city, or country.

And the best part? You can do it all from the comfort of your own home.Thanks to the internet, we can create exponential growth and achieve greatness as a team!

About Marijke de Jong

Founder of Straightness Training (ST) and The ST Academy

One of Marijke's main specialties as a master horse trainer is her knowledge about natural asymmetry in equine bodies and the solution to this: developing symmetry and balance in the horse’s body by using Straightness Training.

The mission of Marijke is to end unnecessary suffering and to help riders have their horse mentally, physically, emotionally and spiritually fit into late life.

Marijke is a master instructor and leads the online coaching program in The ST Academy and certification of ST Instructors.

Marijke was born in the Netherlands but lives in Portugal together with her partner in life and business Marc Marsman.

Learn more about Marijke »

About Marc Marsman

Chief Executive Officer of The ST Academy

The whole ST Community benefits from Marc's designs, portals, systems, automated processes, live sessions, videos, and latest techniques.

All this leads to a solid platform where STudents can learn, discover, grow, feel inspired, get ideas, find solutions, and become the best ST trainer they can be to create health and happiness for their lovely horses!

Marc is passionate about his work for The ST Academy and explores all new trends.

He loves the outdoors and finds time to hike and play golf as much as possible. 

Marc, alongside Marijke, is responsible for managing the careers at the ST Academy.

About Maestro

Meet the equine icon behind the global Straightness Training movement"

Marijke's Straightness Training journey started with her horse Maestro, a Dutch Warmblood gelding born in on 7 April 1994 - so that means he's 30 years old now.

Back then, Maestro was – in a way – handicapped by his natural asymmetry and the fact that this was not recognized before.  

Therefore he was physically out of balance which caused symptoms such as running and rearing. And this caused him to be also mentally out of balance resulting in a state of flight or fight.

Marijke succeeded in resolving Maestro’s asymmetry problem so that he could he was able to perform comfortably in all that he was asked to do.

With this special horse, Marijke started to travel the road of Straightness Training that lead the combo all the way to performing the levade. 

The levade is perceived as the summum of Straightness Training: It's about balancing the horse on two legs, asking the springy hind legs to carry all weight instead of the already naturally heavy front end.

Learn more about Maestro »

About Straightness Training

A path to achieve balance in body, mind, heart, and soul 

Maestro and Marijke traveled such a long road, and what an absolute privilege it is to share this journey with other riders and help them turn things around for their 'ordinary' horse and reach much higher and 'extraordinary' levels.

To pass on the ST wisdom and experience to other horse owners – who might even struggle with their own 'Maestro' – is very special.

Straightness Training is not only for the high and mighty in dressage.

It is for everybody - it doesn't matter if you are a beginner or advanced rider.

And it's for every horse - no matter what age, breed or size.

The goal of ST is to have horses fit in body, mind, heart, and soul into late life.

And in case you want to ride our horse: to give your horse the best possible physique to carry you no matter their conformation.

Tthe challenge of Straightness Training is not about having the best moving horse...

but instead, to get every horse, we ride to move as well and in the most healthy way as he possibly can!

Benefit from our resources »

About the ST movement

An international community of difference makers & game changers

In 2004, we realized that many more riders and horses could be helped and reach much higher levels than they now expect to be capable of!

This made us decide to start the ST movement in the Netherlands to inspire people to do the things that inspire themselves and their horses.

In 2009, we began to share our thoughts, insights, and experiences through online videos, eBooks, articles, memberships, and clinics also in English. This way we could teach people all over the world about the meaning and usefulness of the various gymnastic Straightness Training exercises to rebalance their horse.

With our international website, we served riders anywhere in the world who wanted to discover everything about natural asymmetry and Straightness Training in order to help their horse flourish in body, mind, heart, and soul.

But it was not enough.

The high demand for education and training in Straightness Training inspired us to create The ST Academy which now has thousands of members across the world.

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About The ST Academy

Get STarted. Get Coached. Get Results.

In 2013, we founded the international Straightness Training Academy. 

The ST Academy is a useful STarting point for many riders and horses.

A guide for those who are seeking information on how to ride and train horses and achieve the results they are looking for.

With our online programs, Marijke share's her knowledge, experience, thoughts, and valuable insights. Marijke explaines the meaning, usefulness, and appropriateness of the various gymnastic exercises to benefit your horse.

Being a member of The ST Academy truly is an unforgettable opportunity to connect with different cultures and such a diversity of wonderful horse-lovers all over this planet! We’re honored to meet such kind and inspiring riders in The ST Academy!

Thank you for choosing to follow along, thanks for your support, and for being an active participant in our mission to transform lives around the world!


Join one of our programs »

About the ST Instructors

Committed to providing personalized guidance and support

Through our Certification Program, we train and certify ST Instructors from all over the world.

The ST Academy aims to form a worldwide group of horse trainers and instructors to the cause of improving health, joy, and beauty in working with horses based on the principles of Straightness Training.

A group of loyal and dedicated horse trainers and professional instructors:

âś” who can at all times avoid unnecessary suffering, by addressing the natural asymmetry in the body of their horse.

âś” who can take care of the mental, emotional and spiritual needs of their horse.

âś” who are able to create an amazing relationship with their horse.

âś” who can lead a magnificent life together with their horses!

Through the help of the ST Instructors, we now can help thousands of riders and horses worldwide in 65+ countries!

Licensed ST Instructors are a Scholar in The ST Academy and up to date with the highest STandards of teaching ST.

Find the Licensed ST Instructor who is right for you:

Find a local ST Instructor »

Your Path to Harmony

From understanding your horse's natural asymmetry to gaining certification,
we guide you STep-by-STep on your Straightness Training Journey!

Get STarted »