Grade 8 Unit 3: We believe in one Catholic and Apostolic Church.

The students explore the unity and diversity of the Church. They
reflect on the primary mission of the Church to share in the love of
the Trinity and by examining different models of the Church come
to better understand the richness of its diversity. As members of
an apostolic Church the call to love and serve others is lived out
and expressed in the Sacraments of Marriage and Holy Orders.

From Alberta Ed. Catholic Handbook for Parents Grade 8