When Harford Day School opened its doors to 30 children in kindergarten through second grade in September of 1957, it marked the realization of a dream of a small group of families who wanted to provide an educational choice for Harford County families with young children.
The group was led by Sara Brumfield, who became the founding headmistress, Mignon Cameron, who taught French and history for twenty years, and Sidney Poor, who spent countless hours volunteering and sent two of her sons to Harford Day.