We used the SB-LM when DS8 was 4.5. and then used the WIPPSI III the following year. The ineteresting part was the score was within a couple of points. DS then took the Woodcock Johnson Achievment test the next year and scores where DYS level. The SB-LM was not as helpful as the other tests. The SB-LM was given for admission to a private school and the administrator report seemed to stop at the limit needed for the school. Ds completed the CTY test last year and did well, his results seem to still mirror the achievemnt test. We may spend more money in the future for a WISC, but its more out of curiousity then need. As Dottie says, over time a good picture develops.