cantkeepaway that's so funny. Yes, the newsletters were squirrelled away where I wouldn't see them, and the group was only ever referred to as "Saturday club" - nobody ever mentioned the words gifted, IQ, NAGC etc in my hearing in case I got ideas :-).
Back to the thread.... It's a shame that the NAGC/Potential Plus groups are no more but I suppose they were of their time. Potential Plus might offer you a route to finding like-minded parents in the same boat, though, OP, and you could then progress to meet-ups - on a scale, at least initially, that didn't trigger administrative and insurance issues, to test the water?
More general observation but I detect in many of the comments upthread a tendency to conflate "gifted" with "academic achievement". They really don't always go together. Some high-achieving children will be bright and diligent and highly-motivated, but not gifted. Others will be like me, outliers but almost accidentally high-achieving (straight A's, Oxbridge starred First etc) having coasted and daydreamed in class and tried to blend into the background as much as possible. Then there's people like my DH, who left school at 16 with few qualifications and what was later assessed as a reading age of 12, because nobody had noticed either his dyslexia or his giftedness. Thankfully he had a full ed psych assessment a couple of years later, in time for him to return to education and turn his life around, but was he still a "gifted child" through his school years, given that he was bottom of the class? To misquote Stephanie Tolan, hell yes he was still a cheetah. "Giftedness" isn't academic performance and achievement (as we all too often define it), it's an unusual mind.
Meeting the needs of gifted children shouldn't be a zero sum game of prioritising their emotional/social development OR their intellectual curiosity. Both need feeding. Good luck, OP.