DS is registered for the SCAT test .
What are the things / documents he needs to take to the SCAT test?
Is it just the email printout from the Prometric centre or anything else .
Pencil , Eraser ?

How does your DS feel about timed tests? With the SCAT the timer is right on the screen and if your DS worries about time it will drive him crazy.

At our prometric center they will put a post it note over the timer if you bring one.

The timer made my DS panic!

Any other documents for proof?

You just need to bring the last page of the Registration Guide, which is the page where both a parent and the child sign. Whoever takes your child to the testing center needs to bring a government issued ID. Your child will need to sign in and out of the testing center, including if he chooses to take the ten-minute break. The testing center provides paper and pencils.