MacGregor embarked on a 30-year odyssey throughout the independent school world: as an English teacher, administrator, student advisor and housemaster at Berkshire School in Sheffield, Massachusetts; and then as an admissions professional and student advisor at the Gunnery in Washington Green, Connecticut; Trinity Pawling School in Pawling, New York; and King’s Academy in Madaba, Jordan.
Coree was a member of the Thursday Morning Club, a past volunteer at the Great Barrington senior center, a past member of the local chapter of the NAACP and a lifelong proud Democrat.