Final answer:
The Hazelwood v. Kuhlmeier case established that student newspapers not designated as forums for student expression could be subject to school control, with a lower level of First Amendment protection.
Step-by-step explanation:
The legal precedent established by Hazelwood School District v. Kuhlmeier is that public school curricular student newspapers, which are not established as forums for student expression, have a lower level of First Amendment protection than other forms of independent student expression. The Supreme Court ruling in Hazelwood v. Kuhlmeier allowed for school officials to exercise greater control over the content of school-sponsored activities like school newspapers, as long as their actions are reasonably related to legitimate pedagogical concerns. This decision distinguished between student free speech rights in various contexts, underscoring that schools have a role in overseeing certain types of in-school student speech.