...OVERVIEW + Vermont Student Assistance Corp.'s (VSAC's) series 2012-B is backed by a pool of private student loans originated under VSAC's deferred variable-rate Advantage loan program. + We placed our rating on class A-1 on CreditWatch positive to reflect our view that the expected collateral performance and growing credit enhancement might be sufficient to support a higher rating and because we believe the ratings on the senior class A notes can be differentiated. + We affirmed our rating on the class A-2 notes to reflect our view of the collateral performance and current credit enhancement level supporting the rating. NEW YORK (Standard & Poor's) Nov. 25, 2015--Standard & Poor's Ratings Services today placed its rating on class A-1 from Vermont Student Assistance Corp.'s (VSAC's) series 2012-B on CreditWatch with positive implications. At the same time, we affirmed our rating on the class A-2 notes issued from the same trust (see list). The trust is backed by a pool of private student...