The United States Supreme Court has ruled to give parents the right to opt their children out of lessons that feature LGBTQ books.

The decision has made religious and conservative parents' rights groups cheer while leaving teachers, authors, and civil rights advocates reeling in disappointment. The latter has sounded an alarm that educational institutions could soon become less inclusive.

The Supreme Court's latest decision allows parents to pull their children out of classes that feature material they do not like or object to on religious grounds.

The court, which was divided in its decision, ultimately sided with a group of Maryland parents who filed a complaint that their school district refused to allow them to opt their kids out of an art class that had books featuring LGBTQ+ characters.

The parents, who are from Montgomery County Public Schools, included Muslims, Roman Catholics, and Ukrainian Orthodox followers. They argued that the school district's policy that banned them from opting their children out contradicted their First Amendment right to freely exercise their religious beliefs, according to USA Today.

The Supreme Court's decision on June 27 agreed with the parents, where judges said that American parents should be allowed to remove their children from lessons if they believe it would protect their families' religious ideologies.

Justice Samuel Alito wrote on behalf of the court's majority that books featuring LGBTQ+ teachings and characters "unmistakably convey a particular viewpoint about same-sex marriage and gender."

Three liberal justices dissented in the case, with Justice Sonia Sotomayor saying that the result of the case would be "chaos for this nation's public schools." She added that there will be countless interactions every day in public schools that could expose kids to messages that conflict with their parents' beliefs, because of the great diversity of religious beliefs in the nation, BBC reported.

The books in question include "Uncle Bobby's Wedding," which has a story that features a girl being told about her uncle's planned gay wedding. Another is "Born Ready: The True Story of a Boy Named Penelope," which is a story about a transgender boy.

There was significant disagreement about how the books were actually used during class hours, and the school district said they were used in the same way as others. This is by placing them on shelves for students to find and making them available for teachers to incorporate into reading groups or read-alouds, as necessary, as per CNN.