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Hi! I had my child tested for a gifted school. She took the SB5. We received back a "sum of scaled scores" of 161. I am wondering what it means in terms of IQ score. Does anyone have any idea how to convert it or if it is even possible? Thanks!

I think straight 16's would be a little higher than that-- I think I remember reading in one of Dot's posts once that straight 16's yields a FSIQ 3sd above the mean, or 145.

But I'm not sure either...

(good luck at round 2)

Thanks everyone! I just felt like I needed a frame of reference as to what this score meant. I don't have the breakdown of what she scored on each subtest, all I got was this one number. I was told that the maximum possible score is 190, so this is likely all 10 subtests with a max of 19 on each one.

My son's total of scaled scores was 163 and the Full scale IQ was 141 on the SB5.

That is a great score!

Hello, new here. First post.

There's plenty of anecdotal stuff on the net about other test scores but very little out there in regards to the SB5.

Does anyone know what represents a very high score? Any idea what the highest score achieved is?

I would presume this would be produced using the Extended IQ function of the test.

Not sure Zanzi, obviously 160 is the highest, but they can do extended scoring (typically when a child scores 150+ and hits several ceilings....or some may do extended scoring when lower than that). Our psych did extended scoring for DS5 on the SB5, and while it was helpful it just kind of told us he was WAY up there (which was already pretty evident).

So yes, with the extended score, 160 is not the highest? Or does the difference between the FSIQ and the EXIQ go beyond the second being an extension of the first?

Does the EXIQ represent the score or is it the FSIQ that you should use as a guide and hold the EXIQ in a special category of its own?

Despite their other failings, older tests at least seemed to provide a single number, ie: two hundred and somesuch, which represented the final result (so far as I know).

no, with the extended score it goes beyond 160. Not sure how far beyond but past 200. I don't believe the EXIQ represents the score, even though most will say it is a much better representation. In our report it reflects that the EXIQ is a much better reflection of his abilities, or something like that (more eloquently stated I am sure). We just report the FSIQ, but for our school we gave them the report so they had the other info. I have found that most people still don't get the IQ thing, I have to admit I knew none of it until DS5 came along. I think some are still looking for higher numbers so when you say your kids IQ is 150+, some people still think of the scores in the 200's.

Thanks shellymos, that's helpful.

I think I've found the answer with this quote:

"The Interpretive Manual of the SB5 (Roid, 2003) offers a table of Extended IQ scores for children who score above 150 IQ or below 40 IQ. Scores range as low as 10 and as high as 225 IQ. Based on Rasch scoring, the examinee is credited with all raw score points beyond the requirement to obtain the ceiling score of 19. "