That was part of my geography lessons as well..but I seem to remember it was about the US State flags and we didn't go international.
Then I ask, if he has been doing this for 9 years, as Hamlin says; why now the uproar?
Has to be much more to the story..quick run to the ACLU.. seems if this was just a purposeful test relating to prior disagreements up to this media attention point...The Dept of ED/govt pulling the reins/regulations on school classroom procedures vs teacher discretion and creativity on what and how classes are taught within the public schools...
The law he's against is new.