Office of Special Education and Rehabilitative Services
The Office of Special Education and Rehabilitative Services is a subsection of the U.S. Department of Education. OSERS' rather broad mission is to address the difficulties which individuals with disabilities—children and adults— must overcome.
While the page largely lists OSERS' various programs, the section likely to be of the most use to you is the office's publications and products. Several offerings intended for parents may be worth a read for special education teachers and educators in inclusive classrooms. Take a look at "Opening Doors: Technology and Communication Options for Children with Hearing Loss" and "Learning Opportunities for Your Child Through Alternate Assessments".
The piece de resistance of the webpage is the Tool Kit on Teaching and Assessing Students with Disabilities. The tool kit offers research and suggestions for assessment, instruction, behavior, and accommodations related to students with disabilities. Read up on how children learn to read, K-3 text comprehension, or positive behavior support.