babochka:
Religious education of children is usually directed at preparation for sacraments and required for the reception of those sacraments. Sacraments are essential to the life of a Christian. How can we, in good conscience, charge for this?
You just opened a huge can of worms for another thread

Suffice to say, Religious Education is a whole life process. Every DRE, every Pastor I’ve ever encountered works to change the attitude that RE is only for 1st Communion and Confirmation Prep.
As you said, you live in a tiny parish. There may not be enough children to have a separate class for every age. Based on averages, that means you likely have 30 or fewer children (ages 4 - 17) in your parish. It would not be difficult to buy a tiny number of RE textbooks, worksheets, pencils, cookies, make photocopies, etc.
When you have 3,000 children in that age group, things get expensive fast. 30 Confirmation Prep workbooks are easily around $500 with shipping, etc.
For very small, 15 family parishes, the Diocese would have funds to help support that parish. Grants are available, Catholic Home Missions helps these small parishes. That is a wonderful thing!
Medium to large parishes are facing a much more expensive task.