Parents with common sense comes from teaching children common sense. You have to fix the child education issue first, a lot of adults are too far gone to educate at this point.
How can you fix the child education problem without fixing the parent education? School is but a few hours a day, and kids spend more time with parents and learn from them. I was lucky that my parents liked to read and encouraged me to read, but my friends didn't have the same exposure that I did and never liked to read books.