The highest anyone has reported is Daniela Simidchieva with a 192. Statistically, one person on Earth has a 200.

by definition, 100 is average. 50% of the population would be between 89-111. Only about 10% (1 in 10) are above 120.

130 to 159 is considered gifted and over 160 is considered genius.

At about 137 you’re looking at only 1 out of 100 people. At 150 it’s down to 1 out of 1000 people. Daniella (above) is in a group of 1 in a 100-million.

Scores can be age adjusted which makes them different than a base score and can also be reported as a deviation IQ which can put the score over 200.

This all assumes that the test instrument is valid, is delivered in a controlled environment, and is interpreted by a professional. The fun online tests are interesting but they aren’t truly valid measures – some can be very close though.

I assume one could go higher, it is just not normed for these tests.