K-12 education should abound with opportunities for entrepreneurial activity.

"Greenfield," a term that investors, engineers, and builders use to refer to an area where there are unobstructed, wide-open opportunities to invent or build challenge, represents a challenge to create a world more welcoming to dynamic, talented, and hard-working educators.

The challenge of "greenfield schooling" is to cultivate environments that invite entrepreneurial ideas and to provide an infrastructure that allows those ideas to succeed on a wide scale.

What kind of success had educational entrepreneurs had? What challenges lie ahead?

Educational entrepreneurs aredeveloping exciting new reformsthat could change the face ofAmerican schools.