Reply to Prep material for Cogat, please suggest

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[quote=Anonymous][quote=Anonymous]I attended one of the info sessions beforehand and was told that kids who need to be prepped to get the scores aren't the kids who need the program in the first place.[/quote]

Someone may have already said this. The problem is that the kid does not get only a numerical score, but also a percentile ranking. So let's say that your kid would score 135 on the NNAT, and be on 98th percentile without prepping (and probably be in the pool). Then 10 other kids, who would score 131 without prepping at 95th percentile, actually prep, scores 136, and are now on the 99th percentile. These kids, will not change your kids score, because 135 does not change, but the 98th percentile may become 96th or 97th percentile. And there, just because some of the other kids prep, your kid does not make the pool, and is not shining anymore.

The percentiles are rankings of scores from the highest to the lowest, and then you see what percentage of kids falls below a certain score. Than that score is associated to that percentile. So, if 99% of the kids taking the test score below your kid, then your kid scored on the 99th percentile, and is screened for the program. If other kids prep, and their score becomes even equal to your kid's score, then that 99% becomes a lower one, lets say 95, 96, 97%, etc. The percentile is not what percent the kid got right, but it is the kid's score ranking with respect to other kids' scores taking the same test. [/quote]

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