The Origin of the Confraternity of Christian Doctrine
The Confraternity of Christian Doctrine was founded in Milan in 1536 by Castellino da Castello to provide catechetical instruction to children and adults who lacked formal religious education. Pope Pius X's 1905 encyclical Acerbo Nimis mandated that every parish establish a CCD program, cementing it as a structural pillar of Catholic parish life in the 20th century.
What CCD Teaches
CCD classes traditionally cover the four pillars of the Catechism: the Creed (what Catholics believe), the Sacraments (how grace is received), the Commandments (how Catholics are called to live), and Prayer (how Catholics relate to God). Classes prepare children for First Reconciliation, First Communion, and Confirmation — the three sacraments of initiation completed after Baptism.
CCD vs. Catholic School vs. RCIA
CCD serves Catholic children who attend public or non-Catholic private schools. Catholic school students receive daily religious instruction integrated into their curriculum. RCIA (Rite of Christian Initiation of Adults) serves adults seeking to enter the Church. All three form part of the Church's comprehensive catechetical mission, though CCD remains the primary vehicle for parish-based faith formation.
Modern Evolution: PSR, Faith Formation, and Beyond
Many parishes now use terms like "Parish School of Religion" (PSR) or simply "Faith Formation" rather than CCD — reflecting a broader, more family-integrated approach. Modern programs often include parent components, small-group discipleship, and service learning alongside doctrinal instruction. The goal remains unchanged: forming disciples who know, love, and live the Catholic faith.