If Mr Anson would read a little further on in the Constitution, he would discover that the Fourteenth Amendment applies the entirety of the Constitution, including the First Amendment, to state governments. Assuming he knows that our public schools are part of the state government, he could then recognize that school administrators cannot deprive their students of their Constitutional rights.

Love this SCOTUS quote from back in the day: " It can hardly be argued that either students or teachers shed their constitutional rights to freedom of speech or expression at the schoolhouse gate"