CRA Entrevinas is a Rural Grouped School, made up of two villages: Fuensaldaña and  Mucientes.  Both are located in a straight line north of Valladolid.

Fuensaldaña , 10 km from the capital. It has nine classrooms: three for preschool and six for primary school. It is the main school of the Rural School Group (CRA). The management team is based here, staff meetings and teacher gatherings are held here, and the school library is located here.

The Fuensaldaña school consists of two buildings: one where the Early Childhood Education and Primary Education (grades 1-3) classes take place. This building also houses the school's administration offices, a multipurpose space for early morning care, the cafeteria, and other activities, and the school garden.

In the other building, the activities of 4th to 6th grade of Primary Education take place, in addition to housing the library, the classroom for Therapeutic Pedagogy and Hearing and Language and a meeting room for the teaching staff.