Each bureau uses a modified version of the Fair Isaacs scoring method. Equifax has the BEACON system, Experian has the Experian/Fair Isaac Risk System, and TransUnion has the classic FICO Risk Score system.
It is important to know that each bureau uses a slightly different scoring method because scores will be different. They all weigh the report about the same as far as what is important and what is less important. Credit scores typically range from 300 to 850. Anything below 600 is considered high risk and a score of about 720 is great with the best rates available.

