St. Charles of Borromeo uses the Image of God, 2nd Edition series as the foundation for catechesis.

from the Image of God website:

Each Image of God books includes text and activities, all delivered in a clear, comprehensive and interesting presentation emphasizing Christ’s living and active presence in the Church throughout her history. The lives of saints and other persons of importance serve as focal points for the history of the Church and role models of living the faith. The lessons are complimented by colorful illustrations, Scripture references, and cross-referenced to the YOUCAT and the CCC.