At Tiyan High School, our mission is to provide a challenging learning environment that promotes academic excellence which inspires students to be globally competitive.

Tiyan High School (THS) is a senior high school in Barrigada, Guam. It is a part of the Guam Department of Education. It was scheduled to take students from Adelup, Anigua, Agana, Barrigada, Barrigada Heights, Las Palmas, Macheche, Maina, Maite, Mogfog, Mongmong, Tiyan, and Toto.

The school opened in August 2014. About 1,400 students were scheduled to attend the school on opening day.