Marc Tucker says I am wrong for saying I cannot support the Common Core.

Unlike me, he says they need no field testing, no trial.

He doesn’t worry–as I do–that they are developmentally inappropriate for the early grades.

He doesn’t worry–as I do–that the rigor-rigor-rigor that is so widely hailed might widen the achievement gap and discourage struggling students.

He doesn’t worry that reactionary groups and entrepreneurs are excited about the prospect that Common Core will cause test scores to plummet. In every state.

How can he be so sure that the Common Core will do no harm?

I don’t know.