"Grey literature" means documents that are not formally published books or articles. It typically means reports by governments, non-profit advocacy/foundation groups, and the like, but in education can also mean lesson plans and other direct teaching materials.
Finding grey literature:
- EDULinks Canada Google Custom Search Engine
EDULinks, an initiative of the Ontario Teacher Education Library Association (OTELA) is an internet portal to the best Canadian educational resources online.
- Canadian government reports:
- The ERIC database's "ED" items are primarily grey literature. In the limiter box "Journal or Documents", limit to "Documents" (primarily US-produced items). The Library has ED microfiche from May 1994 to 2004 (when the series ended). For older fiche than that, use Interlibrary Loan and include the ED# in the "notes" field.
- US Department of Education's "What Works Clearinghouse" - hundreds of "best practice" reports based on scientific evidence
- Canadian Council on Learning - various reports about Canadian education and best practices, including several systematic reviews of major topics
- Canadian Teachers' Federation - numerous reports and position papers, primarily about the conditions of teachers as employees, some areas restricted to members only
- Google - aside from the materials above, you may have luck finding grey literature using regular Google. Check the credentials of the sources carefully.