Expelled? Really?

Um, could a public high school really expel someone for wearing items related to one presidential candidate and also allow another opponent to speak at the school? And, if the superintendent of the school is a huge Bush supporter, could she decide to expel a student for wearing a Kerry button even when George W. wasn't on the premises?

Here's what happens when someone tries to contact Rachel Schultz, the superintendent of the Wisconsin/Richland Center school district where this threat was supposedly made.