On test day, you should start the test 10-15 minutes prior to your scheduled time.
In general, you should plan to launch the SSAT at Home 10-15 minutes prior to your scheduled time. This will allow you to log in to your SSAT account, launch the Secure Browser, and complete the room scan and selfie.
Similar to other appointments, your proctor and time slot have been reserved for you. It is possible to launch your SSAT at Home as early as 30 minutes prior and as late as 30 minutes after your scheduled time. Since proctors will not arrive or be able to start the test until close to your appointment time, logging in 30 minutes early will likely require you and your student to wait patiently. On the other hand, if you log in with only a few minutes left and have a technical difficulty, your time slot may end without you being able to test.
Based upon this, we recommend that you log in 10-15 minutes before your scheduled start time. You can long in earlier, but be sure this will not cause additional stress or anxiety for your student.
If you log in more than 30 minutes after your scheduled time, you will not be able to take the test. If you start the check-in prior to this time, you will be ok. It's only if you haven't started the check-in prior to this time that you cannot take the test.