All parents would have to be CRB checked and then it is fine. Most schoolshave a list of parents who have been checked thse days. If it is a Council run centre then I guess it is fairly close to home. They are working wonders if they do not need any parents to help! Usually, if a school is asking for parents to go, they know they have space for a couple sleeping overnight in a shared staff bedroom. If the centre does not have space, the parents would not stay over. This is why schools tend to do this sort of trip fairly near home.
Children with SEN or any diagnoses can go. It is children and parents who decide they do not want to go that are left behind. It is assumed everyone has a place until they decide it is not for them. By using the word "struggle" I meant not ready to be away from home. You cannot stop other children gaining value from something because a few do not want to do it: where would that lead? At the school my children attended, the teachers were very much up for doing it. Totally enthusiastic and brilliant with the children, all week.
I think the parents who are not keen will just stop their child going, like GreatWhites above. It just means the staff get the most independent children and have less to worry about. If someone wants to go home, they can be collected, but even the slightly shaky ones were fine on our trip becaue they loved the activities, having their friends around them, laughing and having fun.
I think schools and other organisations realise that residentials have great learning value. I wanted to mine to go on every available trip, and they did. It gives them confidence, independence and challenges them. They can succeed in all sorts of areas they thought impossible. Best of all, it is away from the classroom. It is away from SATS and homework. What is not to like? We have a tendency to think children cannot do things when they can. Why assume they will all cry, just because a tiny number might? The ones that cry when they stay with a friend or Grandparents clearly should not go but that should not stop others from having an enhanced education.