Everyone knows a good intelligence test asks you Raven's progressive matrices -- the one true sign of intelligence -- and nothing else

Edit: I was of course joking, but from my own link:

The high IQ societies Intertel and the International Society for Philosophical Enquiry (ISPE) accept the RAPM as a qualification for admission,[14][15] and so does the International High IQ Society.[16] The Triple Nine Society used to accept the Advanced Progressive Matrices as one of their admission tests. They still accept a raw score of at least 35 out of 36 on Set II of the RAPM if scored before April 2014.[17]

Sounds like some pretty depressing societies. Give me a secret cool kids club that's all about mazes any day of the week. I like mazes.