Established on September 2, 1902 by American Thomasites, it is one of the oldest public high school system in the country.

[2] It is one of the largest secondary schools in the region with over 7,000 student population.

[1] Tarlac National High School was founded on September 2, 1902 by the American Thomasites during the early years of the American period in the Philippines, becoming one of the oldest public high school in the country.

Tarlac deputy division superintendent Frank Russell White served as its first principal.

[2] On October 28, 2015, a fire razed the original main building as well as the social hall of the school, prompting the creation of a resolution that sought the school to be recognized as a national historical site by the National Historical Commission in 2017.