NEW YORK–(BUSINESS WIRE)–Fitch Ratings has taken the following rating actions on Nelnet Student Loan Trust 2005-4 (Nelnet 2005-4): –Class A-3 notes affirmed at ‘AAAsf’; Outlook Stable; –Class A-4L downgraded to ‘BBsf’ from ‘AAAsf’; Outlook Stable; –Class A-4AR-1 downgraded to ‘BBsf’ from ‘AAAsf’; Outlook Stable; –Class A-4AR-2 downgraded to ‘BBsf’ from ‘AAAsf’; Outlook Stable; –Class B downgraded to ‘BBsf’ from ‘Asf’; Outlook Stable. All classes have been removed from Rating Watch Negati