In September 1976, Los Primeros Structured School opened as a separate K-6 school on the Dos Caminos campus. Los Primeros Structured School was authorized as an alternative school through E.C. 5811 (Dunlap Bill).

Since 1982, Los Primeros Structured School's K-8 classes have been served on the former Pleasant Valley School campus in the Old Town section of Camarillo . The facilities were modernized in 1997 and continue to receive upgrades.

The Los Primeros staff and parents work closely together to preserve traditions and to provide an organized, consistent, curriculum through the nine grade levels. Los Primeros has been named a California Distinguished School twice.