You’re passionate about an issue and you want to take a stance. So, you gather up a bunch of students and organize a protest—a sit-in, a walk-out, a picket line, etc. But does the school have the power to shut it down? Aren’t these protests protected by the First Amendment? 

In general, a creative work like a photograph is owned by the creator of the work, even if they are a student journalist. However, the school might have some rights to use a student journalist's photos, especially if they signed an agreement.