By Diane Ravitch - It is important to remember a few key facts about the Opt Out Movement. Number one: It was created and is led by parents, not by teachers or unions. In New York, where 20% of the students refused the mandated tests, the leader of the state’s teachers’ union did not endorse opt out until a few days before the testing started. The organizations promoting the opt out were grassroots, unfunded, and parent-led. Number two: The opt out movement did not arise in opposition to the publication or implementation of the Common Core standards. It was only when parents received the results of the first round of Common Core testing that they got angry and got organized to fight the tests.