Which Supreme Court ruling allows students to express their rights politically at school?

The Supreme Court ruling that allows students to express their rights politically at school is Tinker vs. Des Moines. This landmark case, decided in 1969, revolved around the issue of students wearing black armbands to protest the Vietnam War. The Court ruled that students do not "shed their constitutional rights to freedom of speech or expression at the schoolhouse gate." This decision affirmed that students are entitled to express their political views in a non-disruptive manner while at school, provided that their speech does not interfere with the educational process or violate the rights of others.

In contrast, the other rulings mentioned do not specifically address students' rights to express political views at school. U.S. vs. Nixon deals with the limits of executive privilege, Miranda vs. Arizona focuses on the rights of individuals in police custody, and Mapp vs. Ohio addresses illegal search and seizure without touching on students' rights in the context of political expression.