Maybe i'm a weird case, but compared to the O-Chem section on my real DAT the 2009 DAT was the NFL of O-Chem. Given, after scoring a 16 on 2009 O-Chem section I studied my eyes out the next two weeks, but considering I scored +9 compared to my 2009 DAT score on O-Chem I think the 2009 DAT should be taken with a grain of salt (For O-Chem at least).