Complex sentence: St. Colmcille's National School, which opened in September 1976, consists of a separate Junior and Senior Primary School, is based in the Idrone Estate beside the Parish Church and the Community Centre and is by necessity one of the largest schools in Ireland.
Split into simpler sentences: St. Colmcille's National School, which opened in September 1976, consists of a separate junior and senior primary school. It is based in the Idrone Estate beside the church and is one of the largest schools in Ireland.