Hester Klompmaker is the national show jumping coach in the Netherlands with the highest level diploma-ORUN 5. Hester's students are multiple participants, winners and prize-winners of the European Championships, the Dutch Championships and other both national and international tournaments. In the past, Hester has been active on the international arena in Grand Prix competitions, is a multiple winner and prize-winner of both international and national competitions. Hester also performed at the World Championship in Lanaken.

In the Netherlands, Hester has her own stable where she trains her students, prepares horses and sells them all over the world.

From 2013 till 2019, Hester was the member of the Dutch Stallion Selection Committee of the KWPN (Dutch Warmblood Association), together with Cor Loeffen and Wout-Jan van der Schans. At this moment she gives independent breeding advice at several different customers in the Netherlands and other foreign countries.

Students' achievements:

• 2019 - daughter Jorinde Dolfijn. European Champonship Individual 5th and golden medal with Dutch children team;
• Jorinde Dolfijn - 3rd place Dutch Championship Children;
• son Roelof Dolfijn - Dutch Champion 1.00meter

More students rode European and DutchChampionships, where they won medals.