Baltimore Catechism No 1. Since 1885, the Baltimore Catechism has been used as an incomparable tool for passing on the faith to the next generation. The modern revival of this Catechism reflects a growing desire among Catholics to understand and learn the truths of their Faith. The Baltimore Catechism clearly and concisely explains what Catholics believe in an accessible question and answer format. Baltimore Catechism No. 1 is a superb teaching instrument with 33 lessons appropriate for grades 4-7. The content is structured and limited in order to be easily grasped by young children. Parents and catechists will enjoy using this Catechism to instruct their children and students in the fundamentals of Catholicism.