Bishop Allen was instrumental, together with fellow Auxiliary Bishop Francis Marocco and Archbishop Philip Pocock, in the Archdiocese of Toronto's 1960s campaign to establish and enlarge Catholic Secondary Schools in the Archdiocese.
In the Archdiocese of Toronto during the 1960s, Bishop Allen was instrumental, along with fellow Auxiliary Bishop Francis Marocco and Archbishop Philip Pocock, in the campaign to create and enlarge Catholic Secondary Schools within the Archdiocese.