While the teacher was still talking (before getting to the point), she mentioned a boy's name and immediately I thought, "Oh no! The boy did something to her?" (Coz the boy has poked her eyes before :-|) Then I was somehow relieved when she said the boy has dirtied XY's uniform with a duster (for the white board). She told me the principal said if I can't get the stain out, I can get a replacement from them (I presume the boy's parents will bear the cost).
~ the stained sleeve ~
It was really a weird coincidence that she was wearing a new uniform today (I've just bought new ones last week as the old ones are very short already) and he chose to 'stamp' her. By the way, he doesn't pick on her, he disturbs other students as well.
I searched the internet for ink removal and the only solution available at home is nail polish remover. It didn't work. So I asked Kakak to put some Dynamo, let it stand for awhile, then wash. Luckily the stain can be removed completely. I think they must have used non-permanent marker pens in class. Now it's as good as new. Phew...