reminds me of the time my cousin made me go with her to a JB concert. never in my life have i seen so many boobs.

I believe her explanation was. "You just don't understand"

So are you suggesting that there are appropriate reasons and/or circumstances for a child to expose themselves to their classmates in the middle of class? Please do enlighten us, because try as I might I can't think of any.

No, I'm not suggesting that. I most certainly am suggesting that someone might be leaping to wrong conclusions, and oh look, you just did. The point is obvious. Why does the mother assume she's heard the full story just because the school told it to her? Classmates sometimes lie, teachers sometimes mistake students, wardrobe malfunctions sometimes genuinely happen, stories sometimes get exaggerated. 'Telegraph' from maybe student to teacher to headmaster to secretary to mother can misreport things. When the daughter replies "Mum you just don't understand." It's perfectly possible that the mother doesn't understand. Where is the bit where the mother asked about the truth of the claim, the full circumstances or her daughter's reasoning? Without that information, the mother does not understand, even if it turns out the school was telling the full truth. At the end of the day it might turn out that the daughter's behaviour was actually inappropriate- but you can't claim to understand if you have no idea what the student meant to happen, what she thinks happened, and what it looked like from her perspective.