Here are a few relevant old threads (for interest - not wanting to stop anyone having more discussion on these topics if you like!)

BBC Documentary Series: Child Genius
Freeman research vs A Nation Deceived etc. (Freeman is the tester featured in the programmes)

Threads on whether to tell IQ numbers are harder to google, but here's one superlong one
To tell or not to tell....DS wants to know IQ

Email: my username, followed by 2, at google's mail