The school was founded in 1924 and housed in a building known as Rougemont House on Clevedon Road, Newport. The school expanded into the adjacent house in 1931 under the ownership of the Evans family. By 1946, the school was housed in Nant Coch House, Risca Road, Newport, and the number of pupils increased to approximately 200.

When the Evans' retired in 1974, a number of families raised a loan to buy the school, electing a board of nine governors. The Stow Hill buildings, formerly housing the Convent of St Joseph were purchased, and provision was extended first to Common Entrance level, then to O-levels and finally the first A-levels were taken in 1983 under the leadership of Frank Edwards. The site at Nant Coch was retained as a pre-preparatory department.

Succeeding years saw two changes of leadership, namely headmasters Richard Ham (1988–1991) and Graham Sims (1991–1995). Ham's tenure as headmaster was cut short by his sudden death in 1991 as a result of sepsis.

Under the headship of Sims the school moved to its present site, Llantarnam Hall, a large Victorian mansion set in 50 acres (200,000 m²) of parkland on the outskirts of Newport, in 1992. The former premises were sold to developers and are now occupied by a new housing estate. The building that currently houses the infant school is named for Nant Coch.

The termly fees for attending Rougemont range between £2,333 and £4,359 depending on the pupil's age.^[2] New pupils are interviewed by the headmaster and senior teachers; they are also required to sit examinations to determine their academic aptitude.

The Parent Power magazine said that Rougemont School was the 5th Best School In Wales.

• William Bragg, cricketer
• Matt Tebbutt, chef and television food presenter
• Richard Parks, Welsh international rugby union player
• Banita Sandhu, Bollywood actress

• School website
• Map sources for Rougemont School

51°37′18″N 3°00′45″W / 51.62155°N 3.01253°W / 51.62155; -3.01253