This article profiles Nate Greenberg, a superintendent of the Londonderry (NH) School District who viewed action research as a means for supporting libraries, which he sees as central to education. During the past six years, Londonderry's cascade of action-research projects (led by librarians) has tackled challenges such as how to get high school kids to use the district's expensive databases rather than rushing to Google, how to help floundering third graders survive a biography unit, and how to teach fifth graders online ethics. Action research has produced some fascinating findings about how Londonderry's kids learn, and it's a major reason why Nate Greenberg is 2007's "SLJ"/Greenwood Publishing's Administrator of the Year.