Why does Tinker v. Des Moines remain an important precedent-setting case?

In Tinker v. Des Moines, the Supreme Court ruled that students do not “shed their constitutional rights to freedom of speech or expression at the schoolhouse gate.” Schools may limit student expression only under certain conditions, such as when it substantially disrupts school activities. The case therefore established important speech rights for students, rather than stopping unpopular opinions or protecting only war protests.

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