Read the excerpt from Hazelwood School District v. Kuhlmeier. We deal first with the question whether Spectrum may appropriately be characterized as a forum for public expression. The public schools do not possess all of the attributes of streets, parks, and other traditional public forums that “time out of mind, have been used for purposes of assembly, communicating thoughts between citizens, and discussing public questions.” Hence, school facilities may be deemed to be public forums only if school authorities have “by policy or by practice” opened those facilities “for indiscriminate use by the general public.” If the facilities have instead been reserved for other intended purposes, “communicative or otherwise,” then no public forum has been created, and school officials may impose reasonable restrictions on the speech of students, teachers, and other members of the school community.

In your own words, identify the argument, its premise, and the purpose of this excerpt. How are the argument, premise, and purpose connected? Explain your answer using textual evidence to support your responses.