Who has the highest i.q level?
The person with the highest IQ level is Abdesselem Jelloul. This is according to an IQ test conducted in 2012. He scored an adult IQ level of 198. Learn more on http://mostextreme.org/highest_iq.php.
Depends on the IQ test that is used. The long-time "standard" WAIS-R test only scores up to 171. Also, there's a lot of dispute in intelligence science about what tests and types of test questions are actually revealing of intelligence.