In Titlewave, besides the Essentials and Literacy Trends there is a link for State Standards. However, this is turned off by default for international customers. I believe that this is a great place to find materials to support your curriculum. For example, if your school uses the International Baccalaureate framework, look at how this lines up with the U.S. National Standards for Social Studies:
International Baccalaureat U.S. National Standards
Who we are I. Culture III. People, Places, & Environments
Where we are in place and time II. Time, Continuity, & Change
How we express ourselves IV. Individual Development & Identity
How the world works VII. Production, Distribution, & Consumption VIII. Science,Technology,& Society
How we organize ourselves V. Individuals, Groups, & Institutions VI. Power, Authority, & Governance
Sharing the planet IX. Global Connections X. Civic Ideals & Practices
You can go directly to this list in Titlewave by clicking on the link and logging in (use the drill down option): http://www.titlewave.com/go/node/100736
If you would like access to this link in your Titlewave, please contact your sales representative from Follett.