Understood.orgUnderstood is a website designed for parents of children with disabilities, and the website provides great background into special education statutes and procedures to file a complaint. Their website states, "Parents want the best for their children. We do, too. For the first time ever, 15 nonprofit organizations have joined forces to support parents of the one in five children with learning and attention issues throughout their journey." This is one of the most user-friendly sites I have found. The organizational structure allows easy navigation by topic. The information provided is clear and concise so nearly anyone could read and understand it. They summarize complex statutes and regulations and make them accessible for parents, lawyers, and educators. This is the first place I would consult as it will help you develop a strong foundation on the most important issues in special education.