I've got the same next year (Kingswood, wherever that is). Senior KH will be in year 6 and the school has a tradition of sending the whole class for a week on an Outward Bound week to 'develop' them or some such. Tbh I have no truck with it because a) we didn't have it as kids and I would have loved it and
you only go to school once and he is in a great class and it's something of a rite of passage for all of them. I can understand for those who have a lower income than me, but I would happily pay more if it meant someone less fortunate could attend. And I don't mean the teachers.
On the opposite side of the coin I always said no to expensive school trips as I knew my parents struggled with four of us. But my elder sister and two younger brothers still went on them, including expensive skiing trips to the States. I just wasn't mercenary enough, clearly.