Sorry, i know its a BBC link, but even BBC shows how low IDF can go killing and then producing poor quality videos as justification.
At the scene: BBC's Chris Morris in Gaza
It is a grim scene at the school: debris and personal belongings scattered among dried pools of blood, in a classroom where displaced Palestinians had been sleeping.
The UN says this is the sixth time that one of its schools has been hit by shellfire since this conflict began. And I've been told by UN officials on the ground that they believe Israeli forces were responsible on each occasion.
Israel often disputes the UN's version of events. When the UN said an Israeli mortar had hit a school in Beit Hanoun last week, for example, killing at least 13 people, Israel produced video from an aerial drone which it said showed the school compound was empty. But the UN told me - and it has made the same point to the Israeli military - that the resolution of the video is so poor compared with proper satellite imagery that you cannot see some of the trees in the compound, let alone the people.
Now the language the UN is using to protest against attacks on its schools is becoming stronger, as it has become angrier and more exasperated. Referring to today's school attack, the Commissioner-General of Unrwa, Pierre Krahenbuhl, could not have been any clearer: "I condemn in the strongest possible terms this serious violation of international law by Israeli forces."