Question for the testing experts on here... can you retake the WJ IV after a year and a half and get valid results? I know some have mentioned you can't retake some of the ability tests, so I'm wondering if that also applies to the achievement tests.
DS is taking his school's Single Subject Acceleration exam in April, which requires a perfect score of missed material in order to skip the grade, including showing his work in a very specific way. What I've learned is that most people take the test, fail it (by not getting a perfect score), and then have to go through an appeal process. It's my impression that it will take a very strong case to get SSA to skip 1st grade math in this school/school system.
I think it would be useful to be able to back up his results on the school test with WJ scores that show he is in fact working 2 grade levels ahead in math, which is how I would expect him to test, and therefore should easily be able to handle the one grade skip. However, the latest version of this test that he took was mid pre-k and showed him working at an end of 1st grade level (which is the grade he's trying to skip) so I don't think it will be useful.
I know there's also an acceleration assessment out there, but I'm not sure this school has experience with it/would value the results.
