It would have been difficult to select a time less propitious for the founding of a new school than the year 1944. The United States was at war. Washington was overcrowded, confused and inhospitable. However, in September of that year, The Primary Day School opened its doors. Founded by Miss Lucille D. Schoolfield, Miss Josephine Timberlake and Mrs. Marie S. Buckley, it served as a demonstration school for the Phonovisual Method. For ten years the school flourished in space provided by various churches.

From the start, parents were enthusiastic and supportive and, in 1954, The Primary Day School was organized as a non-profit corporation in Maryland. A small foundation grant was obtained. Some of the parents guaranteed portions of the mortgage; one gave land on River Road for building a site. In the fall of 1955, the founders' dream of a permanent home for the school became a reality.

Today, The Primary Day School stands as a tribute to the efforts of parents, friends, faculty and staff. As a lasting legacy of its three founders, training in the use of the Phonovisual Method has become available to thousands of teachers throughout the United States. Phonovisual, which is the cornerstone of Primary Day, has contributed to the improved education and to the love of learning for the many children who have attended the school.