Lagan College was founded as a response to the conflict in the community and to the religiously divided school system in Northern Ireland. Most Catholic children attended Catholic-maintained schools, while Protestant school children mainly attended state schools. Since 1974 the All Children Together movement had been lobbying against the segregation in schools in Northern Ireland, however even by 1981 there had been virtually no initiatives from either the churches or the government in the direction of integration. Consequently, a small group of parents with children at the age of transfer from primary to secondary school decided to take the initiative with the support of ACT. They founded the school in September 1981 in temporary premises at Ardnavally Activity Centre beside the River Lagan in South Belfast. On the first day the school contained 28 pupils and seven staff members, including the Principal, Mrs Sheila Greenfield, one full-time teacher and five part-time teachers. At the end of 1981 the college needed to be relocated, and it was moved into a vacant primary school situated at Castlereagh, overlooking Belfast from the south-east, in time for the start of the Easter term. From September 1983 the new first year pupils were taught in the Manor House at Cultra, until a new building became ready in October 1984. For the first three years of teaching, Lagan College received no government funding. Parents of pupils contributed what they could afford towards the costs. However over £500,000 still needed to be raised, so an appeal for benefactions by private individuals and charitable trusts was launched to bring the school to the point where it could develop into an economically viable institution. Lagan College gained maintained status in 1984, making the school eligible for full funding from the Department of Education. From this point 100% of running costs were met by the Department of Education and the school governors were responsible for 15% of capital expenditure. The school's first Chairman was Basil McIvor, a former Ulster UnionistMLA and Minister of Community Relations, who was a proponent of integrated education in Northern Ireland. From 1985 to 1987, due to accommodation difficulties, the 98 new first year pupils were taught several miles away from Castlereagh in the Balmoral area of South Belfast, in premises shared with the newly opened Forge Integrated Primary School. A permanent home for Lagan College was eventually found just outside Belfast at Lisnabreeny, thanks to the hospitality of the National Trust. The first temporary buildings were opened at Lisnabreeny in September 1987, however travelling continued between the two areas until September 1991 when the first phase of the permanent school building was opened. Following new legislation in 1989 concerning the development of integrated education by the then Minister, Dr Brian Mawhinney, the College became a Grant-Maintained Integrated School in 1991. As a result, 100% of the costs are now funded directly by the Department of Education for Northern Ireland. As of 2010, the first third of the permanent school building is open. Approval for the completion of the permanent buildings was given in 2002 under the Department's private finance initiative at a cost of £11.1 million. It is anticipated that the building programme will begin in 2010. With the current educational climate in Northern Ireland, Lagan College stands among the top post-primary education secondary schools. While its focus has been on integration in terms of religious background, the school also integrates children in an 'all-ability' context. Thus, Lagan College accommodates for children with a variety of academic backgrounds. As of 2010 the college accommodates 50% of its pupil intake, retaining at least those who achieve an A grade in the transfer procedure. With that in focus, Lagan College remains one of Northern Ireland's most oversubscribed schools. The school recently opened new buildings, opened in 2014.
