NEW YORK (Standard&Poor's) Jan. 26, 2011--Standard&Poor's Ratings Services said today that it raised its fund credit quality ratings on three BlackRock Fund Advisors (BFA) funds and lowered the fund credit quality rating on another. We affirmed the volatility ratings on all four funds: iShares Barclays 1-3 Year Credit Bond Fund to 'A-f/S2' from 'BBB+f/S2'; iShares Barclays Intermediate Government/Credit Bond Fund to 'A+f/S2' from 'Af/S2'; iShares® 2013 S&P AMT-Free Municipal Series to 'A+f/S1' from 'A-f/S1'; and iShares S&P National Municipal Bond Fund to 'Af/S3' from 'A+f/S3'. We raised the ratings on the iShares Barclays 1-3 Year Credit Bond Fund, iShares Barclays Intermediate Government/Credit Bond Fund and iShares® 2013 S&P AMT-Free Municipal Series because of the funds' increased
