The odds are probably low (esp. if you have a report from the CogAT company), but you never know. I'm also not sure if all the CogAT forms are bubbled/computer scored, or could some be hand-scored? Could it be that some kids don't bubble well enough for the scanner to pick it up? It wouldn't hurt to see if they still have the answer sheet. I was pretty sure DD's scores were at least somewhat close because she left so many blank (the report I had indicated the number of questions attempted and the number of correct answers)--and not finishing is something I can see her doing because she takes her jolly time with everything and it was timed. She finished the verbal section, and it's harder to get excessively involved with short verbal questions. They put her in the cluster based on the finished verbal section, and that was the goal at that point. I knew even if there was an error with her birthday it wasn't enough to make a difference for the magnet so she'd need to do another test anyway. It wouldn't hurt to ask--they may think you're nuts but at least it would put your mind at ease.