The Supreme Court held that schools may restrict what is published in student newspapers if the papers have not been established as public forums. What did the Supreme Court rule regarding the ability of schools to restrict the content of student newspapers?
1) Schools are not allowed to restrict the content of student newspapers
2) Schools can only restrict the content of student newspapers if they have been established as public forums
3) Schools can always restrict the content of student newspapers
4) The Supreme Court did not rule on this issue