Ds1 when on his preschool trip on Friday. Apparently they 'lost him for a minute'. I know this sort of thing happens, but when my DH asked them about it they said one of the parent helpers was looking after him as he was being good. Is this the norm then? They had asked me to go but then said there wasn't enough room on the coach (turns out there was) but I assumed that the nursery nurses would actually be responsible for the kids and that we would just be there as extra help.