Mercedes Schneider wrote a book about Common Core (“The Common Core Dilemma: Who Owns Our Schools?), and she knows its history as well as anyone. One thing she knows is that Jeb Bush was one of the biggest supporters of the Common Core. When the criticism started, he defended Common Core. When the criticism intensified, he said he would not cut and run from Common Core. He stood on principle in their defense. He saw the Common Core standards as the answer to closing achievement gaps and doing all sorts of important and good things.

But now that he is in a hotly contested primary campaign, he forgot what the Common Core standards are. He doesn’t remember supporting them. He just likes high standards. He wants to get as far away from the Common Core brand as possible. It has become “poisonous,” he said recently.