Santiago City National High School - Rosario Extension is a public high school located in Rosario, Santiago City, Isabela. Our school is committed to providing quality education and holistic development to our students, preparing them for the challenges of the future. With a dedicated team of educators and staff, we offer a comprehensive curriculum that includes academic subjects, co-curricular activities, and values formation.

At Santiago City National High School - Rosario Extension, we prioritize the overall well-being and success of our students. We strive to create a safe and nurturing environment where students can thrive academically, socially, and emotionally. Our school is equipped with modern facilities and resources to support learning and growth, and we continuously seek to innovate and improve our programs to meet the evolving needs of our students. With a strong commitment to excellence and a focus on individualized attention, Santiago City National High School - Rosario Extension is a place where students can discover their potential, develop their talents, and reach their goals.