My 11 year old son is supposed to have a sleep-over in his school tonight, but because he has been sleep walking 2 times in 2 weeks, I decided it wasn't a good idea. He might venture out of the school and I am worried something might happen to him. Also, his classroom is on the 4th floor, so there are more risks involved. The first time it happened last week, our nanny was able to wake him up and he was confused and asked why he was standing up. Last night it happened again and he went out to another room and somehow knocked over the stand fan. She tried to wake him and he was flailing his arms at her saying he was looking for something. She said it was getting harder for her to bring him back to his bed because he is so heavy. I am worried, he might fall from the stairs. Our house is 4 stories and it really worries me that he could stumble or go out in the streets without our being aware of it. Does anyone else have a child that's a sleep walker? Could you please share your experiences?