2016 prospect Jeb Bush defends Common Core school standards

Former Florida Gov. Jeb Bush said Friday night he is standing by his support for the Common Core school standards rejected by a segment of the GOP's most conservative members, including other potential presidential candidates.

"Raising expectations and having accurate assessments of where kids are is essential for success, and I'm not going to back down on that," Bush said during a congressional fundraiser in suburban Des Moines.