There is a link for student financing as well. US Dept of Education grants and contracts homepage. What they are and how to apply. A major source of grants for schools, educators and professionals.
Many initiatives focus on young learners.
The well-respected Peterson's Guide online. A list of grants and scholarships for all levels in diverse fields. Click on Foundations and Grants for a long list in alphabetical order. A good grant search starting point. Education World's list of grants and funding for teachers and students.