Holyhead Comprehensive School was established in 1949 as the first comprehensive school in the country, following an amalgamation of Holyhead Grammar and St Cybi Secondary Modern schools. An engineering workshop and drawing office, designed by County Architect N. Squire Johnson, was built and opened in November 1949. Although the accolade for the first purpose built comprehensive school in England and Wales may go to Ysgol Syr Thomas Jones, Amlwch, the comprehensive school at Holyhead is testament to the local authority's pioneering ideas and approach to comprehensive education, dating back to the 1930s. In 1954, Holyhead Comprehensive School accommodated for over 1,000 pupils. The school incoorporated the earlier built Cybi building, dating to 1904 and is Grade II Listed, although the school stopped using this building as its Sixth Form centre in 2006.

M. Powel, RCAHMW. May 2024.

Cadw Listing Summary ref.87587; 'Holyhead Secondary School', Holyhead Mail and Anglesey Herald, 18 November 1949, p.8; 'Teachers Eyes are on this Experiment', Western Mail, 12 February 1954, p.5; 'New Headmaster', Western Mail, 26 February 1954, p.5.