by terrorists at the school on tuesday. cnn's nic robertson got a remarkable inside look at the school. before i bring you this report, i do want to warn you that video and content in it is graphic. >> reporter: this is where the taliban got into the school. they cut the barb wire at the top of the wall, scaled it using bamboo ladders. another team got in down here. then they took off towards the main buildings. they burst into here, the main auditorium, split into two teams. it was full of children here taking classes. >> translator: they shot me as soon as they came in. we tried to run. i was shot in my shoulder. the people who came, they had no sense of humanity in them. >> reporter: so many of the children afraid, trying to hide underneath these benches. the class was going on. a brigadier was giving a lesson in first aid. the dummy, the apparatus, left