"The characteristics of the school as a place of learning reinforce that administrators cannot favor one side of a debate involving parental speech on an issue of prominent public concern, and which, in those parents' views, concerned the safety o...


"The characteristics of the school as a place of learning reinforce that administrators cannot favor one side of a debate involving parental speech on an issue of prominent public concern, and which, in those parents' views, concerned the safety of their children."