A significant reorganisation in 1971 combined three schools – Friars School, the Bangor County School for Girls (also a grammar school), and Deiniol School, a co-educational Secondary modern school. The three schools brought together formed a new comprehensive school, under the Friars name, but on three sites. The former girls' school became the Tryfan site, a Welsh language medium for the lower years, while the Ffriddoedd building was the location of the English language medium lower years. The senior years came together at a new building, built for £300,000 on a new site at Eithinog.