I encountered a woman the other day wearing a "who is Zea?" T-shirt. So I asked. She turned around, showing the rest of the shirt. Zea is the Zion (Illinois) Education Association. The lady then volunteered that they wear the T-shirt every Friday at school and that it helps not having to think about what to wear that day.
Perhaps it is time for the Zion school district to consider a dress code for teachers. A teachers union is not an innocuous organization. Right or wrong, teachers unions engage in negotiations that, by definition, have two (or more) sides. As such, they can and do lead to contentious exchanges in a given locality.
Why should such an organization be allowed to not-so-subtly propagandize to a captive audience of school children?