Love it. Looks really good in black an white. I would be tempted to try and clone out the girls head at the bottom of the picture that is below the boys chin. As it is a little distracting. This way the focus would lie with the boy ant the front and them you would slowly work your way around the picture to the other children. I may be also tempted to crop out the girl furthest to the left as she seems out of focus.
But what a great picture!