[1] Former Manila Mayor Arsenio Lacson approved Ordinance 3122 on January 27, 1948, changing the name, Araullo High School, into Manuel Roxas High School, in honor of the fifth President of the Philippines, President Manuel Roxas.

The site of the Cuartel de España in Intramuros was the initial location of Manila High School, by the declaration of Resolution 283 on May 26, 1953.

However, due to the delay of construction, quonset huts were utilized as the main building of the high school.

The remaining two annexes, the MacArthur and Victoria, were transferred to a three-storey building in July 1963, located in General Luna Street.

[1] In July 1953, the National Radio School Annex consisted of 11 rooms - necessary to accommodate the applicants to the first year classes.

The home economics, vocational, and physical education classes were held at the main building at Mehan.

[1] On October 18, 2005, Ambeth Ocampo of the National Historical Institute issued a certification that Manila High School was officially established in 1906 under the tutelage of Dr. David P. Barrows, former Director of Education, and Charles H. Magee, former Acting-Superintendent of the City Schools of Manila.