I agree there is a quandary as to whether to test, and once you get the results for a very young child, whether to believe results, high or low. I have been concerned for dd, now 4, since her brother was not tested early, and we did definitely run into issues with school fit, some minor ld, etc in first grade. I wanted to do more proactively for dd4, and started looking into some different schools. Almost any option seems to have the prerequisite of testing, so I have finally made that leap. The wppsi is pretty short (<1 hour for a 4 yr old) and that alone would make one have to suspect it's long term reliability, so I'm definitely prepared to take any results with a grain of salt.
