I have started a Specialization from one of their partners - Univercity of Illinois. They use Peer Review system as a scalable solution. 2 out of 3 people graded my answers as Good and Exelent that give points to pass, and one gave the lowest grade with feedback saying "m". When I tried to report that to Coursera Support, referring to the Honor Code that they always want you to sign to, they said there is nothing they can do except re-submit my work. This system/format could be much more well-thought but Coursera fails to do so.
