St. Mary's University High School Department in Poblacion Bayombong, Nueva Vizcaya is a prestigious educational institution known for its high standards of academic excellence and holistic development of students. As part of the St. Mary's University system, the High School Department upholds the core values of discipline, excellence, and service to others. With a strong emphasis on providing quality education to students, the school offers a comprehensive curriculum that covers a wide range of subjects from the sciences to the arts.

The school prides itself on its dedicated faculty members who are committed to nurturing the intellectual, social, and emotional growth of each student. In addition to rigorous academic programs, the school also offers a variety of extracurricular activities and sports programs to encourage students to explore their interests and talents. St. Mary's University High School Department is dedicated to preparing students for success in higher education and beyond, instilling in them the values of integrity, leadership, and civic responsibility.