Ilocos Norte National High School

This building is now part of Ilocos Norte College of Arts and Trades (or INCAT) as the Related-Subjects-Building.

It was used to provide adequate facilities for an expanded school population, it was however destroyed in the summer of June, 1941 due to a fire.

Due to the unexpected destruction of the Related-Subjects-Building, the students of the following year were forced to study in improvised classrooms in several rented houses and in the grandstands of the provincial Grounds (also known as Marcos Stadium) During the Japanese occupation of the Philippines Girls and Boys were segregated into two separate buildings known as the Boy's High School and the Girl's High School, but after some time it was destroyed, the source of which is unknown.

During its early years of its existence, the school was administered by America, the first of which was a man named George Summers who later married the former Julia Agcaoili and the last American was Muilenberg.

Founded in 2001, their name comes from the combination of the Ilocano words "sam-it" (sweet) and "aweng" (sound).