The Supreme Court is leaving the issue of transgender rights in schools to lower courts for now after backing out of a high-profile case Monday of a Virginia high school student who sued to be able to use the boys’ bathroom. The court’s order in the case of teenager Gavin Grimm means that attention now will turn to lower courts around the country that are grappling with rights of transgender students to use school bathrooms that correspond to their chosen gender, not the one assigned at birth.