Education-Charter School go Results Found: 2 Button group with nested dropdown BASIS of Flagstaff BASIS of Flagstaff 1700 N. Gemini Dr. Flagstaff AZ 86001 (928) 774-5502 Northland Preparatory Academy Northland Preparatory Academy 3300 Sparrow Ave. Flagstaff AZ 86004 (928) 214-8776