Firstly, for host families who have children of their own, please consider at what age would you consider it reasonable for them to meet up with friends by themselves. For younger students an acceptable alternative to them going out during the day by themselves is to liaise with the other host families concerned to ensure that there is at least one responsible adult with the group who want to meet up, or within easy reach. Remember, part of the whole summer school experience is being with the host family and joining in with whatever activities they are doing. Therefore, even if the student wants to meet up with their friends from the course, this should only be for part of the day as when they are with their friends they are not speaking English!