Standby Testing Worth It?

<p>On the deadline for the June SAT I was planning to register but all the test centers near me were full. So should I study and pray that someone doesn't show up on test day or just wait till next October to take it? My score the first time I took it was 2180 and I definitely feel I can improve on that. </p>

<p>What are the chances that a person wouldn't show up on test day?</p>

<p>In my country (outside the state) they had place for all the standbys (around 3 of them). can you call the test center and ask ?</p>