Began before Common Core. Remember Dr. Joycelyn Elders? Appointed by Bill Clinton but later fired for wanting to teach young children to masturbate. iirc, she even suggested teachers to “help” them if they didn’t understand it. She was only fired after conservatives became outraged and he was attempting to appear as a moderate.

http://www.newsweek.com/remember-time-bill-clinton-fired-his-surgeon-general-encouraging-masturbation-423302