Well, playing devil's advocate, I'm not sure that it has much of anything to do with Gracious Professionalism. Sure, it may not be very appropriate for what's supposed to be a mostly school-oriented activity... but anti-GP? Not really. (As I remember, there was a team who would strip for alliance partners...

)
I suppose, with some finagling, you could say anything that might offend anyone else as being un-courteous, and then twist GP into meaning courteous...but it's a push.
But the regional music choice...for a school event, maybe a little over the top, but if the FCC isn't complaining, it must be fine right?....

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