The history of YCS is  a pioneer of Catholic Social Action and Lay apostolate in the Church. Cardinal Cardijn was a strong believer that Human Beings are created in the image and likeness of God, to live in Dignity. 

YCS/YSM is a student movement where students come together in small groups to share their interests, problems, experiences, anxieties etc and find a solution of their own through the YCS methodology of See, Judge and Act i.e. Awareness, Reflection Action and Evaluation.