GroundControl Martial Arts is a Brazilian Jiu-Jitsu school at 20 Stonedon Drive in East Tāmaki, Auckland, that says it has been running for over 20 years. It offers beginner Essentials classes, adult classes in gi, no-gi and open practice, and junior classes for children aged 7 to 16. Beginners need no martial arts experience or fitness base. The school also runs in-house and external tournaments for students who are ready. A two-week trial is listed as a special offer for $29, which includes an online video course, as at 2026. The school says it will refund the fee if a beginner does not feel changed after the first Essentials course. Visitors can enquire by filling in the online form.