JSD: As we have been compiling this issue of JSD on professional learning communities, I have been fascinated by how many schools and districts are seizing the concept of community, and yet how relatively few examples there seem to be of effective working communities. Why is this concept so hot right now, and why aren’t more schools getting it right? Judith Warren Little: The interest among educators in collaborative work goes back a long time. Back in the 1980s, Andy Hargreaves and I both wrote cautionary tales about how hard this is to do and about how a lot of what comes under the banner of collaboration doesn’t add up to much. At that time, efforts to build more collaborative workplaces seemed localized and homegrown.