Welcome! It sounds as if you do indeed have a GT kid...

Re: afterschooling - DD11 has been doing EPGY for math for 2+ years. We started it because she was definitely under-challenged in math (among other subjects). We have found the program very thorough and challenging - but - it has backfired in one sense. She is now 2 yrs ahead of her already-accelerated math class, so she's bored there. We never anticipated that... But, I hope it will open doors for a possible subject-skip next year. Food for thought...