Although the schools were operated by separate districts, administrators recognized the benefits of merging them to reduce costs and resolve a longstanding rivalry.

[6] During the construction of the new campus, sporting events were held at the old Española High School due to budget constraints.

[7] At Espanola Valley High School, Advanced Placement (AP) courses are offered at EVHS in almost every subject.

[8] There are over 27 elective classes offered to students including concurrent enrollment at Northern New Mexico College.

These include the city of Española and nearby areas such as Abiquiu, Alcalde, Canova, Chamita, Chili, Dixon, El Duende, Hernandez, La Mesilla, La Villita, Los Luceros, Lyden, Medanales, Ohkay Owingeh, Pueblito, San Jose, Santa Clara Pueblo, Velarde, and a part of Ojo Sarco—all situated within Rio Arriba County.

[13] This diverse catchment area highlights the school's importance as a central educational institution for students from both counties.

Española Valley High School fields 25 athletics varsity teams, including baseball, basketball, bowling, cheerleading, cross country, football, golf, JROTC, soccer, softball, tennis, track and field, volleyball, weightlifting and wrestling teams.

The Sundevils captured the state title in the 2011 season as the #2 seed, defeating Goddard High School (55–52).

[20] Española Valley High School's band, Sound of Northern New Mexico, under the direction of Robert Felix, gained national recognition.

In response, music teacher Alfonso Trujillo established a small mariachi band as an elective class.