Time out for a joke. In my home town over seventy years ago there was a large common with two way traffic around it. The traffic got heavy enough the town suddenly made it one way counter-clockwise. A motorist returning from a vacation in Maine didn't notice the signs and started to go clockwise
as he had many times before. A prototypical small town cop
blew his whistle, and stopped him right in front of the hotel, with all the loafers sitting in rocking chairs on the big front porch for an audience.
"Where in hell are you from?" bellowed the cop.
Timidly, the motorist replied: "I'm from Philadelphia, Officer."
"Philadelphia, hey? Then what in hell are you doing with
Pennsylvania plates on your car?"

Dear etaoin: I'm lost too. How did Pennsylvania schools get into the act?