By a 6-3 ruling Friday, the Supreme Court sided with parents who sued Montgomery County Public Schools in Maryland to opt their children out of mandatory LGBTQ-inclusive curriculum, overturning a 2023 federal court ruling and handing a legal victory to conservatives who opposed the district’s policies on religious grounds.

The Supreme Court has ruled that Maryland parents who have religious objections can pull their children from public school lessons using LGBTQ storybooks.

Chicago advocates and educators worry the ruling could have a chilling effect on curricula. The court ruled the schools likely could not require students to participate in lessons involving the books if parents had religious objections.