What will common standards cost?

It will cost $800 million for California to implement Common Core Standards, down from an earlier estimate of $1.6 billion, according to the state education department. That includes training, learning materials and testing.

Other states are starting to worry about the cost. Washington state estimates it will take  $300 million to prepare teachers and principals and buy new textbooks; updating the state’s testing system will be extra.

Massachusetts should know what it’s getting into, writes Jim Stergios on Rock the Schoolhouse. Massachusetts got $250 million over four years to implement the new standards and will require much more, even if California’s revised estimate is accurate.

Under federal pressure, both California and Massachusetts decided to trade well-regarded state standards for the Common Core.