Why is my credit score different with each credit bureau

Why is my credit score different with each credit bureau?

It is not uncommon for credit scores to vary because of different information on file with each credit bureau. The bureaus are independent companies in the same business, and they collect data independently. Some creditors may report your credit activity to only one or two bureaus. Your stellar credit record with a particular lender may not be reported to the credit bureau another lender uses to check your credit score.