Students, parents and teachers at a private school run by the University of Chicago are rallying against a policy they say limits what students are exposed to at school and hurts teachers’ ability to support marginalized students.A new policy at the University of Chicago Laboratory Schools, which serve around 2,000 students from preschool through high school, establishes “standards for viewpoint-neutral education” and gives teachers guidance on how to handle “contested issues.”School administrators say the policy, which had gotten pushback since a draft was first shared in January, is meant to encourage students to become “independent thinkers” and support “open inquiry.”“The...