I'm really interested in others' experiences here. (Not the legal stuff - I know that the law is very unspecific on this topic.) I work full time and have (just) 14 year old twin girls. They're basically well behaved, mature teenagers,...but they are still technically children. At the moment they're latch-key kids after school, which I feel fine about as it's only a couple of hours, we know plenty of neighbours and I work only half an hour away. During the holidays a university student comes to hang out with them / keep an eye / do some cooking and tidying etc. However although they like this girl increasingly they're saying they don't want anyone with them and would be perfectly happy on their own. I don't mind leaving them for the odd day but feel that days on end is too much. What do others do? at what age do you say - that's it, no more childcare?