This earned her a spot in the Victorian Inter-school Equestrian team to compete at the national level in the event, which involves both dressage and show jumping.
The Australian Equestrian Godolphin Championships were held during the September school holidays at the Sydney Olympic Equestrian Centre.
For her win Ruby was selected in the Australian Combined Training Team where she received another sash and horse rug.
At the closing ceremony Ruby was judged the rider with the least accumulated penalty points out of 119 riders and was named Australian Combined Training Champion.
“Ruby has displayed great dedication to her training over many years,” college sport coordinator John Walker said.
“On behalf of the school I would like to congratulate Ruby and the Stubbs family on such a wonderful achievement.”