Isabela National High School is a public educational institution established in Ilagan, Isabela, Philippines.
It was founded in 1904,[1] making it the oldest public high school in the Cagayan Valley region.
[2] It is the only educational institution offering the Open High School Program in the entire Cagayan Valley region.
The school's current principal is Marie Rose P. Ramos Isabela National High School implements programs[3] for students who have high aptitudes in certain areas: Senior High School Strands (Programs) The school is currently implementing grades seven to 12 by the K-12 program of the Department of Education.
These facilities includes the following:[5] Aside from the Supreme Secondary Learner Government, the Isabela National High School's various student clubs and organizations recognized by the school include: