As part of their curriculum, Keystone Montessori students in the adolescent program are encouraged to interact with society and make improvements within their community.
For the past four years, students have been working with Robinson Ranch in south Phoenix. Robinson Ranch provides comprehensive educational programs for under-privileged, disabled and able-bodied children and adults, utilizing horses to facilitate growth, learning and healing. The ranch houses approximately 16 horses, a number of miniature ponies, and many goats. Keystone students have a weekly agenda, which includes feeding all of the animals and maintaining the ranch facilities. Robinson Ranch also has an affiliation with the Arizona Humane Society, at the Nina Mason Pulliam Campus for Compassion. Keystone students have spent time volunteering there, as well, in the equine division.