U.S. Department of Education
The vast resources of the U.S. Department of Education provide an overview of the national educational system and priorities; and include materials for teaching excellence, explanations of federal programs and initiatives, and links to lesson plans and resources for the classroom.
For materials specifically related to American history in the classroom, the search mechanism using the simple search term "history" yields hundreds of resources from grants and contracts information to teaching guides and information for parents and educators.
Among the grant programs, Teaching American History represents a major thrust to raise student achievement through improving teachers' knowledge and understanding of American history.
Practice Guides offer vetted materials on improving student learning across the curriculum.
Teacher-to-Teacher links to summer workshops on teaching history, professional development opportunities, and gateways to professional organizations, instruction, student assessment, and teaching materials.