Education Week's Mark Walsh, a veteran Supreme Court reporter who deeply understands education law, is just out with a fascinating look behind the scenes at how the high court arrived at the First Amendment legal standard that governs much of the speech taking place in schools (and, increasingly, in colleges).The entire piece is well worth reading, but it's particularly enlightening for the nuggets Walsh was able to unearth from the papers of Justices Byron White, author of the majority opinion in Hazelwood School District v.