I've posted this already in Gifted & Talented, but it's been suggested that I might get more responses if I post here, so here goes:
DS2 has been offered the chance to take part in these - or at least apply for the chance as the school has 5 places for the G&T boys.
It's a 2 year commitment.
Does anyone have any experience of these to help us decide if it's something we should put him forward for?