Classroom teachers have been heard to comment, "When I see a thick set of records of a child new to my class, I know trouble is coming." This is another reason for your diligence in reviewing your child's records annually.
Many reports, especially those written several years previously, give little, if any, information that will be useful in current decisions about your child. A careful weeding out of irrelevant documents can help to avoid the thick record syndrome.
From "Negotiating the Special Education Maze," by Anderson, Chitwood and Hayden