The common practice of a tax funded high school treating an adult 18 year old like a defiant kindergartner is a big part of the problem with modern education.
Let him walk. He more than earned it. The rule certainly is a get around the First Amendment. I am not sure of its legality. I am sure of it being wrongly applied.
Speaking the truth is a crime in today’s America.
A few years back, two local boys filled their pockets with glitter. The pockets had holes, and the glitter was on the school floor. One girl slipped and claimed a back injury. The students weren’t allowed to go to graduation. The vice principle is long gone, and who cares, but his decision will last a lifetime. I would suggest Lohr find a gown from years past, don sunglasses, and show up. Let them drag him out in front of the whole town. The boos will be remembered.