There are several basic facts about your credit score that you should know so that you can understand your rating. First of all, your rating is decided based on the information in your report. The credit score range goes from three hundred and fifty to eight hundred and fifty. There are three major credit reporting bureaus and they each have their own report and calculate their own scores based on that report. You want to check all three, because you never know which companies will be checking, and they may have different information. You can do this for free online once a year.