At our parish, sufficient knowledge equals sitting in a classroom 1 hour for 30 weeks on a Sunday morning with 60 other students. It means talking about Penance without mentioning Hell, and other teachings that are half taught. It means doing saint reports because some students have not chosen a patron and we need to help them meet their requirements. It means mandatory homework, that is never checked or returned. It means signed bulletins to prove you attended Mass, but are never collected. And it means paying $80 for a mandatory overnight co-ed retreat. It means no tests, interviews or other means of seeing what the student has learned.
I home school. And we were forced to send our son to class if we wanted him to make his Confirmation. The retreat was also mandatory, if he didn’t go, he would not make his Confirmation.
The problem? Each week, we would talk after class. And based on the topics and what he said, he learned nothing. Not one thing.