Very.
But, there's probably more variation amongst private schools than amongst public schools. I agree with Val that a rare child is still rare, however you are increasing the odds of finding peers (or even kids who are brighter than your kids!!). People with children whose needs are accommodated just fine by the public schools don't just decide to spend a fortune on private school. And the further from average the kids IQ is, the more need for an expensive solution.
The advantage of private is that they have to answer your questions. They can't just ignore you when you ask how many kids of IQ fifty kajillion do they have in each age group, and how do they handle them.
Last edited by Tallulah; 09/08/14 07:49 PM.