CAMom, That was a great question. I went into the Decartes and did find a few objectives that were different. Especially around the 220-250 mark - Which makes sense.
So I called my research group at NWEA - The response was the starting question was the main difference, and it doesn't impact the ceiling of where the gifted student can reach.
But the bank of test questions changes for a student who is taking the 6+.
NWEA adds in the objectives that are considered "Pre-Algebra" for the student who is in sixth grade and higher.
So an average 5th grader could be high but not exposed to Pre-Algebra objectives but a 6th grader could fall into that same range but have a need for Pre-Algebra objectives.
At least that is how I interpreted their response.
Great question - Thank you
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Also - they said they were adding more objectives for those few gifted students who are placing so high and showing very few objectives to learn.
Which is Awesome! I just tested a 3rd grader who was placing post high school on all areas and it was difficult to create the individual academic plan from such few objectives. I am glad to see NWEA on top of it.
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Mcesarano