In their search for issues that will deliver Congress in 2022, conservatives have begun to circle around the cause of “parents’ rights.” In Indiana, Republican Attorney General Todd Rokita recently introduced a Parents Bill of Rights, which asserts that “education policy and curriculum should accurately reflect the values of Indiana families.” In Florida, the legislature passed an even more comprehensive bill, assuring that the state and its public schools cannot infringe on the “fundamental rights” of parents. A growing number of states are allowing parents to sue districts that teach banned concepts. And in Virginia, Republican Glenn Youngkin has made...