As Questions For God covers many subjects not covered in various other texts, and has one book devoted entirely to the Sacraments, it is appropriate to use the series from age 3 through the 2nd Grade (First Communion prep). The simple wording makes difficult concept more easily understood. Individual books will be useful in grades 3-8 as students study the spread of the Church including apostolic succession (Book 8), the Sacraments (Book 9) and purgatory, heaven and hell (Book 10).
Question For God can be used year after year. As the other texts used will change, Questions For God will continue to provide the framework for a more complete catechesis as the years progress. The repetition of the salvation history story, together with the additional catechesis during pre/K, 1st and 2nd grade, will offer a firm Faith foundation for the young child.