International homeschooled students can register for the SAT Subject Tests online or by mail. After you register, you’ll get an admission ticket—remember to bring it with you on test day.
When prompted for a high school code, enter: 970000.
On test day, you’ll need to prove that you are who you say are, so you’ll need a photo ID as well as your admission ticket. You can use a driver's license, passport, or other government-issued photo ID.