Mary C. O’Brien Accommodation District #90 (MCOB #90) was established in 1948 to provide a school for students in the “New Camp” area at Eleven Mile Corner. The school was originally called the Eleven Mile Corner Accommodation School. It has since been named for Miss Mary C. O’Brien who was Pinal County School Superintendent for 26 years (1950-1976). The school at Eleven Mile Corner served . . .