Hello. There is no direct translation from the ITBS to an IQ score. Here is a link that explains the scores on the ITBS: http://www.barrow.k12.ga.us/Testing/What_Do_My_Child.pdf and here are a couple links to places online where you can take an IQ test.
And here is the website for Mensa- a group which studies and is based on high IQ's
There has to be a casual relationship between ITSB & IQ. Doesn't anybody take a stab at it?
Found it. Somewhere between 130 & 135.