[The Gregory School - The Gregory School The Gregory School is an independent, non-profit, coeducational school in Tucson, Arizona serving students in grades 5 - 12. We are the only school in Southern Arizona accredited by the Independent Schools Association of the Southwest (ISAS) and National Association of Independent Schools (NAIS). We are first and only school-based member of the MIT Fab Lab network in Arizona. Our class sizes average under 15, and our teachers have average student "loads" of fewer than 60. Our teacher-to-student ratio is 1:9.]