“‘Rent: School Edition,’ a modified version of the hit Broadway musical,” is still “[t]oo provocative, in the view of some high school officials and parents. At least three of the planned high school productions, in California, Texas and West Virginia, have been canceled after administrators or parents raised objections about the show’s morality, its portrayals of homosexuality and theft, and its frank discussions of drug use and H.I.V., according to administrators, teachers and parents involved in those cases.”