NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed the senior notes at 'AAAsf' issued by Illinois Student Assistance Commission, 2010 Indenture, student loan asset-backed notes, series 2010-1 (ISAC 2010-1). The Rating Outlook remains Stable. KEY RATING DRIVERS High Collateral Quality: The trust collateral consists of 100% of Federal Family Education Loan Program (FFELP) loans. The credit quality of the trust collateral is high, in Fitch's opinion, based on the guarantees provided by the tran