Devos just responded to Common Core issue:
Many of you are asking about Common Core. To clarify, I am not a supporter—period.
https://twitter.com/BetsyDeVos/status/801505785742290945?ref_src=twsrc%5Etfw
One doesn’t sit for three and a half years on the Board of an organization whose sole purpose is implementation of Common Core if one doesn’t support Common Core.