Hello. I'd appreciate advice. My question is similar to the one asked in the prior posting - but a little different, so I am going ahead. Thanks in advance!
DC is happy in school and high performing. Only in 2nd grade at a general education public school. DC's score on the city's Gifted & Talented test of 99 percentile qualifies for a seat but in fact due to over-crowding none is available. (WISC-IV FSIQ on individual test is 146 and the GAI is 154.)

The gen Ed is very easy for DC but still DC learns and has fun. There is a nice robotics club and after-school there are sports and chorus. DC is happy.

However DC is learning below potential and not learning how to learn challenging material. We do supplementary math with workbooks at home and every other week I pick the book to read ("The Hobbit" instead of "Judy Moody")

DC took and qualified for online learning with CTY. I like the idea of formal supplementation. But I hear the programs are a lot of work. My child is clearly capable of more, but is happy at school; my child might enjoy CTY but if it is demanding, might resent the extra time (??); my DC is prone to some anxiety and I certainly don't want to stimulate stress over learning instead of making it fun.

Does anyone have experience with CTY? Does anyone have a high IQ kid in a gen Ed environment who just "let's it be"?

Thoughts?