C-SPAN had a program on the 40th Anniversiary of Tinker v. Des Moines, with Mary Beth Tinker and Maryam Ahranjani, a law professor at American University (who I think could have been a little more in touch with the educational world and the impact of Tinker - wonder if they know there are J.D./Ph.D.'s out there?). But, it is worth watching for Mary Beth Tinker's thoughts, which start at 2:30, and the references back to the audio from the oral arguments.