When will MIT start reviewing EA applications?

It appears it may take MIT a week or more to receive and sort out all submitted application materials. Does the application reading start on a day like 11/8 or applications are read as soon as they are complete after 11/1? My son’s school sent his school report on 10/30, but it is still shown as not checked on the MIT web site.

http://mitadmissions.org/blogs/entry/early-action-faqs