The G&T label is I believe fairly nrew, dare I say a Labour government education invention. Ten years ago, as governors our special needs policies always referred to 'very able' children and we were only referring to one or two in each class.
One of the gifted children ( knew all the latin names of about 3000 flowers at 4 years old, just for starters) we had took all the top scholarships at the local independent schools, and then dropped out of school at 14, unable to cope any longer. He then had private tutors and collected a few GCSE's but is doing something now that makes him very happy and that he doesn't need any qualifications for, using just his voice ( like his dad on TV) can't say who he is for obvious reasons.
I think the title G&T does put pressure on parents and the child as the expectation to perform is there and the child feels failure if he does not match those expectations all the time, as in this case.
DD's independent school( in the top 30) has it's fair share of behaviour problems, and I am seriously shocked that some of the girls behaviour from reports given to me by DD, the head says it is down to her to deal with it, and uses expulsion as a last resort.
DS's school was exposed in the News of the World a few weeks ago as being a drug dealing haven, now nicknamed 'St Cannabis College' the head does not expel unless it is really really serious. They write and inform all parents of what is going on and what will be done about it.
I think sometimes that the behaviour in private school is far worse than some state schools, in that they do far more outrageous things, rather than general hooliganism that you get at our local state secondary schools.