Parent outreach has been proven to be an effective way of increasing course-taking in upper level high school math and science courses, including calculus and physics. The definitive study was performed by the Wisconsin Study of Families and Work. Their report in the Proceedings of the National Academy of Sciences gives their striking results.
You can download the paper here:
I have made presentations to parent groups in Bay and Orange Counties at the middle and high school levels about high school course selection. Here are power points from several of those presentations:
Mosley High School, Lynn Haven, Florida, April 24, 2018:
Parents of Calculus Project middle school students in Orange County, March 2021:
Dr. Phillips High School, Orlando, April 27, 2021:
Deane Bozeman School, Bay County, May 10, 2021:
I have also compiled resources about high school course-taking from university STEM departments around the nation here.
Bridge to Tomorrow 