I’m a current GS parent and also have a graduate. Both kids have had great experiences here. Kind, caring, accepting and as rigorous as they want to make it. Incredible diversity, both racial and socio-economic. Caring faculty who are always available for extra help. My kids are atheists and neither has an issue with the Quaker aspect of the school. No proselytizing, just acceptance.
Bumping this thread to share this news about a GS grad:
https://www.georgeschool.org/beyond-meat-makes-astounding-market-debut/
People seem to get excited that Mark Zuckerberg went to Exeter (junior transfer, btw), so perhaps Ethan Brown’s success with Beyond Meat could spark a similar interest in George School. 
FWIW, George also has 2 Nobel Laureates among its alum…
Some of the nicest kids I knew at my Ivy League college were George School grads…