NEW YORK & BOGOTA, Columbia--(BUSINESS WIRE)--Fitch Ratings has affirmed the senior and subordinate notes for SLC Student Loan Trust 2008-1 at 'AAAsf'. The Rating Outlook remains Stable for all classes. KEY RATING DRIVERS High Collateral Quality: The trust collateral is comprised 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 transaction's eligible guarantors and rein