It's still an issue.
50 years ago when I was about 16 years old, we had to skip several chapters in our Biology textbook because the school board wasn't comfortable with them. (That's when my beautiful mother made sure I saw the movie "Inherit The Wind". The Spencer Tracy version. Still a favorite of mine.)
It's still a driving force. Today, in Texas, we have a governor who is trying to pass laws to funnel public tax money away from the public school system and into religious schools. Which tend to be fundamentalist evangelical based.