SAR is short for Student Aid Report. You can access your SAR by going to the same page that you used to do your online FAFSA. Correct me if I am wrong, but the purpose of a SAR is to show you what you put on the FAFSA and also for checking and/or correction purposes (i.e. if you see something on your SAR that is not right, you can correct the information on your FAFSA). Hope this helps.