Now, for those of you thinking about canceling your score see these previous posts:
Thinking About Cancelling Your LSAT Score
Whether to cancel your LSAT score.
For details about how to cancel your LSAT score see LSAC.org.
Here are the basics from their web site:
We must receive a signed fax or overnight letter with your request within six calendar days of the test. If you do not receive confirmation of receipt of your request within four calendar days after your request was submitted, contact LSAC immediately. If your request has not been processed, you may submit proof that your request was received at LSAC within the required period. Documentation of proof of receipt will not be accepted beyond 14 calendar days after the test. You can also cancel your score at the test center if you are absolutely certain you want to cancel your score.