My parents live up the road from Jerez school, although I've only visited the school once, I would say a majority are mainly around 20-28's.. but I agree with WWW. my Instructor did all his training and became an FI AND clocked up 400hrs all within 18months of his 18th Birthday, he got onto the falcon's at Bournemouth Airport by the age of 19.. age is not against you when your young in avaition! - in my experience.