A federal appeals court will hear arguments in January about state laws in Texas and Louisiana requiring the Ten Commandments to be displayed in public school classrooms.

Displays of the Ten Commandments in Texas schools were ordered by a federal judge on Tuesday to be removed.

“All Texas public school districts should heed the court’s clear warning: It’s plainly unconstitutional to display the Ten Commandments in classrooms,” said Rachel Laser, president and CEO of American...