What is the credit score rating system and explanations?

The credit reports/scores have a point system and abriviations like EFX Beacon 5.0, XPN FICO-II and TUC FICO Classic.Is there a giude or a publication that provides all the details as to how the system works,the credit score system and what are the methodology for correction of mistakes/incorrect/ time expired entries on record of the three Bueau.

Public Comments

1. Ok well i dont know what to say to ya but its good bussness.im geting 2 points
2. credit score runs from 300 (bankrupt) to 900 (perfect). Try wikipedia or freecreditreport.com for the other information.
3. This system is getting ready to change anyhow, so donbt take the time to study it hard. They are moving in the direction of a more standardized scoring system!