I was born in 1977, so I will speak for my parents and my experience.
After Vatican II, there was a lot of confusion because a lot of things changed all at once. Many Baby Boomers (who were still young at the time) were told during their childhood that the Church never changes, then bamb- tons of changes. Many of their parents (my grandparents’ generation) could not explain to their young adult Children (the Baby Boomers) how the Church changed and didn’t change.
So there were a lot of Baby Boomers having Gen X children, not knowing what to teach their children. Also, many parents thought the CCD programs were teaching the kids everything they needed to know. But in reality, the CCD programs were really just a “lab” and the CCD teachers were expecting the parents to be teaching the faith at home. But the parents were expecting the kids to learn everything at CCD.
I think many Baby Boomers thought the CCD programs would be equivalent to the theology / religion classes they took in Catholic School. But they were not.
For example, it wasn’t until I was 39 or 40 years old that my mother realized that our CCD teachers never took us to confession (besides our First Confession). She expected them to be taking us to Confession regularly after our First Confession. She never knew that the only way we would get to confession as kids was if she took us.
My parents also expected us to learn all of the traditional Catholic Prayers, devotions, etc. in CCD. But I really only learned the Our Father, half of the Hail Mary, and that God loves us in CCD. Though I guess, I learned the Apostles’ Creed too, but I can never remember it without reading it or reciting it with others.
So there was a real disconnect between the young Baby Boomer parents and the CCD instruction offered at the parishes. This lead to a very poorly catechized Generation X, which has made things worse.
Only now are some dioceses really starting to create in depth CCD programs to teach the kids what their parents don’t know.
So this is my experience.
God Bless