My older child did not do too well in Cogat as well. For my younger one, I am prepping him with practice tests so that he is not taken by surprise on the exam date. He gets anxious very easily though he is a really bright kid. Bought this book called "4 Practice Tests for Cogat" from Amazon and we both love it. I am confident he will do well. The questions are actually pretty tricky. Easy to miss out the best answer as 2 seem almost right but only one is. As they say, Practice makes Perfect!