The Ball Building is named after legendary MBA Headmaster Isaac Ball, who directed the school from 1911 until his retirement in the fall of 1942. Originally the home of Mr. Garland Tinsley on a estate known as 'Totomoi' (the name subsequently bestowed upon one of the school's Honor Societies), the school opened in this building in 1915. A fire in 1925 left only the exterior walls. After a year of rebuilding, Ball Hall reopened and served as the main classroom and administrative building, the school library, and residence of the Headmaster and his family. Extensively remodeled in 1992, the building today houses administrative offices and the main faculty room on the ground and first floors, classrooms on the second floor, and development offices on the third floor.