Llantarnam School was a state-funded and non-selective comprehensive school in the Llantarnam suburb of Cwmbran, Torfaen in Wales. Construction began in 1950 and was the first of three secondary modern schools to be built in Cwmbran New Town. It became a comprehensive in 1971 with extensions such as the sixth form building, sports hall and leisure center built by 1975. As part of Torfaen County's 21st century programme, Llantarnam closed in 2015 and was merged with Fairwater High on the latter site to form the larger Cwmbran High School. Llantarnam itself provided education for approximately 1,400 students between the ages of 11 and 19. The school had been placed on special measures, after the publication of an unsatisfactory Estyn inspection report in November 2012. The school site is now a new housing development called St. Michael's Gate, with the playing fields now part of the new Llantarnam Primary School, having replaced the original in Oakfield which was demolished in 2017. That too is now a new housing development called Oakfield Grange.