How about when you need 100 teachers and only about 25 are certified?
you recruit the best people and start them on the road to the certification process
you pair or group rookies with experienced catechists in larger classes if necessary
you come up with other creative solutions if the one teacher one classroom models is not working at this time, such as what I described, where the rookies are small group leaders under an experienced catechist
here we begin with a new catechist orientation, Protecting God’s Children, lesson planning and resource workship required of all new volunteers, before they start teaching.
during their first 3 years they take 7 Secrets of a Successful Catechists, What Every Catechist Should Know, Teaching the Bible to Children and Youth, Grade-level methods class, and Sacramental Catechesis. All catechists also take, with the parents, a 6 week module on the Mass and Eucharist, because I found that was the most critical area of misunderstanding when I came. Over a 5 year period, the time considered necessary for certification, they also take classes on Scripture, Sacramental Economy, Morality, Prayer and Spirituality. the CCC, Bible and catechetical documents are the foundation for all these classes, so they get CCC throughout this process.
they have the option of taking the diocesan program–Echoes of Faith-- at neighboring parishes, which our pastor does not allow here, my classes are in the process of being approved by the diocese, but we have a new director so don’t know where that is now, but it is my pastor’s requirement, and our program fulfills the hours required, but we cover same topics as EOF but in more depth, using more orthodox sources.
most of our catechists were already certified, but even the experienced ones have taken all the new classes and are great students, recognizing that you can always learn more.
If your catechiests are not prepared, prepare them.
If they lack faith formation, form them.
that is the role of the DRE (not acting as a filter between children and sacraments, not para-priest, not she-who-must-be-obeyed).