It allowed schools to censor student newspaper content.
Explanation:
In the 1980s, three Supreme Court cases restricted the rights of first and fourth amendment students: Hazelwood v Kuhlmeier, which allows schools to censor student newspaper content.
New Jersey v. T.L.O., which states that students have lower expectations of privacy while at school and so can search personal items.
Bethel School District # 43 against Fraser, who says students do not have the First Amendment right to make rude speeches.