Make sure you know how to get to the test center. You need to be familiar with the test center itself as well, as you are only given 5 minutes for breaks and you do not want to waste that time finding the bathroom, for example.
Make sure you have everything you need ready the night before. This includes:
Valid photo ID
The list of the schools you want to send your scores to
Authorization voucher (if you made your appointment by mail)
Scratch paper and pencils are provided at the test center, and there will be a clock in the upper-left corner of the computer screen for you to keep track of the time. Calculators are not allowed.
Get a good breakfast on the morning of the test, and don’t try any new foods.
Bring snacks and drinks. While you will not be able to eat them during the exam, you will be stuck there for about 4 hours, so you will need to keep your energy up by eating during breaks.
Dress in layers. You don’t need the stress of spending 4 hours being too hot or too cold.
Schedule something fun and relaxing to do afterwards, whether it’s going out with friends or sleeping at home, as long as it doesn’t require your brain.