The online tests are, obviously, not taken in a test taking environment. I work with people who give IQ test for a living. They tell me that the online tests, most of them, inflate one's IQ score by 15%-20% because of the environment, controls, and the standards set from the official tests, themselves. I know that when I have taken the online tests, I have come out in the upper 160's (168 to be exact). When I was tested in school, under a standardized, test-taking environment, my IQ was measured at 147.