The Gregory School is an independent, private, non-sectarian, coed middle and high school in Tucson, Arizona, United States. The school has no religious affiliation.As of 2015, the Gregory School offers grades 5-12 and has under 300 students with an average class size of 14 students per class. The school's 37-acre campus in central Tucson includes a 370-seat theater, science and technology center, basketball and volleyball gymnasium, band room, soccer and baseball/softball fields, a state of the art fabrication lab, student lounges, and a dining hall.