I agree with frannieandejsmom, the types of tests used and accepted vary dramatically by district and by state, so you definitely want to talk with the school to see what the process is.
Our district does no MAP testing at all and gives the CogAT to all 2nd graders which is a screener for the GT program that starts in 3rd. There is virtually no GT programming before that. But it doesn't sound like regular GT programming would work for your child anyways. If your school does MAP testing that might be the easiest and most straightforward (and least expensive) test to use to advocate for grade or subject acceleration.
