Diane Ravitch is a historian of education at New York University.

The “parent trigger” must be understood within the current context of vilifying public education. Today, there is a national effort to privatize public schools by turning them over to privately managed charters. This movement is financed by some of the nation’s richest foundations -- the Bill and Melinda Gates Foundation, the Eli and Edythe Broad Foundation and the Walton Family Foundation....

A parent trigger — a phrase that is inherently menacing — enables 51 percent of parents in any school to close the school or hand it over to private management. This is inherently a terrible idea. Why should 51 percent of people using a public service have the power to privatize it? Should 51 percent of the people in Central Park on any given day have the power to transfer it to private management? Should 51 percent of those riding a public bus have the power to privatize it?...