I’m afraid I have some terrible news. The governor of America’s largest and richest state has just signed a law that puts 10 million children and adolescents in grave danger of medical mistreatment. The media headlines have it wrong. They claim that California Governor Gavin Newsom’s new law protects children by stopping public schools from outing their new gender to their parents. It does just the opposite. It makes children vulnerable to irreversible and lifelong medical abuse and mistreatment. And it is all based on the pseudoscientific idea that some children are born into the wrong bodies and that we can change a person’s sex through drugs and surgery. For any of this to make sense, you have to understand what’s happening in Britain. Several years ago, the government appointed a well-respected pediatrician named Hillary Cass to investigate whether it was ethical to block the puberty of children, give them opposite-sex hormones, and perform surgeries on their bodies to make them feel better about their gender. Dr. Cass came back a few weeks ago and said no, absolutely not. Around the same time, the British government banned puberty blockers nationwide. And, just a few days ago, the new Labor Party government affirmed that it would maintain the former government’s ban. In her report, Cass said that the so-called “social transition,” whereby a child adopts the identity of the opposite sex, is not a neutral act and has psychological consequences. This means it is the first step toward medical intervention. What Gavin Newsom has done is actively prevented schools from informing parents that their children have been put on a medical pathway. This is an outrageous attack on the rights of children and parents. Children have a right to go through puberty. No adult should be able to block their puberty. And parents have a right to know if their child thinks that they are the opposite sex or were born into the wrong body. We have seen with leaked internal documents of the leading gender medicine group, WPATH, that these medical interventions, namely puberty blockers, hormones, and surgery, are not only irreversible but result in sterilization and loss of sexual function. Children or adolescents are simply not mature enough to understand the effects of so-called “gender-affirming care.” They cannot, in other words, give their informed consent. The new law creates the grave risk that activist teachers, students, and outside groups will convince their children that they were born into the wrong body, and hide their “social transition” from parents, which will lead to harmful medical mistreatment. As such, the law that Newsom just signed is the opposite of what both children and their parents need. We need schools to immediately warn parents if their children think they are the opposite sex. After all, this is a diagnosable psychiatric condition known as “gender dysphoria.” And if your child has a psychiatric disorder, whether anxiety, depression, an eating disorder, or gender dysphoria, you have a right to know. And schools must stop teaching children, or allowing other people to teach children, the pseudoscientific and dehumanizing ideas that it’s possible to be born into the wrong body and possible to change one’s sex. As such, either the legislature, the courts, or a ballot initiative will be required to nullify Newsom’s law. Until then, it is important to spread the word to parents that California public schools are fundamentally unsafe for the millions of children who attend them.