AITB: I wholeheartedly agree that being persecuted at least occasionally is part of being a Christian. HOWEVER, I draw the line at that persecution happening at the hands of government employees in a government-run school, in a country where freedom from such treatment is supposed to be guaranteed by the basic law of the land.
I don't believe we'll ever eliminate this kind of thing, though, so don't worry about Christians never facing persecution (admittedly low-level) in this country. Besides, there are opportunities for persecution and harrassment outside of the government. And you are right that facing a little persecution once in a while can be both an educational and growth experience, even for a kid. That doesn't mean we shouldn't oppose illegal compromising of our rights when it happens, though.
Thanks for your comments, and a very happy Independence Day to you too, my friend!