I have heard this as well but I don't know if its true. In responce to the person who questioned how it work imagine this situation. Person A sends in his secondary on 9/10 but his letters don't arrive until 10/9. Person B sends in his 9/25 and his letter arrive 10/1. Then person A's application would be evaluated first. However, if person C submitted his secondary 9/10 but the school still hasn't gotten his letters then they will skip it and process it shortly after his letters arrive.