Unlikely Radicals provides a social and historical account of the ASTI's role in the development of second-level education and the teaching profession in Ireland. It demonstrates the remarkable contribution which second-level education has made to the lives of millions of young people and to social, political and economic progress in Ireland. It details the development of a trade union which has had a significant impact on social and education policy and which has continued to represent the values of Irish teachers and their aspirations for those they teach.