@Cricket, thanks a lot for the valuable information. I was told by other parents that it is very difficult to get into the gifted program without preparing your child. We didn't do prep other than the regular reading comprehension.
I am not so sure if my son is Gifted or not. I was counting on the CogAT to give me more info to decide if we need to seek furthur evaluation. When I look at the characteristics of gifted, I find him more in the HG or PG range but his CogAT score is not that great to believe that. I would think that an HG or PG kid would score much better than my son.
DS is not a good test-taker, his school hardly administer any tests. But he needs challenges than the regular school work, thats very obvious with the projects he does at home by himself and the gifted program is our best bet now. But DS is very creative and I do not know how much creativity is valued in such programs.