School Daze In Afghanistan

I was arguing with a philosopher who has a blog. We were arguing about the killing of 7 children in a Coalition attack on a school. He said the Taliban were using children as shields, the cowardly scum! How do you know that? I asked. That's what is says in the report, he rejoined. The only thing that tells me is that either (1) somebody made that up, or (2) they knew that there were children in that school and they decided to bomb it anyway, figuring the children would be collateral damage: a necessary evil. How stupid can you be?