Can you get the CoGAT done privately well in advance for much less money than a WISC 4? Is you daughter 6 yet?
Seems like trying to time the CoGAT is too stressful - especially in a family where one kid has 2E issues, I'd get the private WISC 4 as soon as the 6th birthday is here.
It is so inevitable in families that parents will compare one kid to another informally - A is so ahead in X ways but so behind in Y ways. I think having official test scores makes this natural but uncomfortable comparing better. One can say 'well A's processing speed is so much slower, I'll bet she knows the answer, but needs a while to think about it.'
Just a thought.
Grinity
Very good point Grinity, thanks for the insight. It's difficult not to compare siblings, even when they are as different as night and day. I consider both of my children very bright but in different ways. My younger dd is the type of child that academically shows her advanced skills in a traditional classroom. Whereas, the older one you wouldn't see it til you sat down and had a conversation with her and you would be amazed at what ideas and thoughts she has and the things she can create. They couldn't be any more different.
She just turned 6 so she's old enough for the wisc. I'm fairly confident that she would do well on the cogat, she is a very bright, high achieving, high performing child and is probably an ideal candidate for the cogat. But I have also heard many negative things about the cogat for use of G&T identification that concern me. And if I recall correctly if they don't qualify the first year they have to wait 2 years before they can retest/apply.
ETA: I hadn't thought about privately testing with the cogat. Not a bad idea. Also, I had heard from another mom that if your child is absent the day of testing they are tested one-on-one at a later date. So that may be an option too.