Charters and vouchers have always been intended to break public schools, and wrest education away from the public commons. "School choice," a phrase coined by segregationists, has always been about maintaining and exacerbating segregation by race and class.
Graphic Essay: Betsy DeVos' 'School Choice' Movement Isn't Social Justice. It's a Return to Segregation. by Adam Bessie and Erik Thurman is a powerful piece that makes complex concepts easy to understand. It's a excellent thing to share with non-academics regarding the scourge of school privatization via charters-vouchers. I've included a quote and a teaser from the piece below.