Understanding Educational Law There are two main laws that define educational law in the United States, the Americans with Disabilities Act, (ADA) and the Early Hearing Dectection and Intervention Act, (EHDI). The ADA is a law that defines rights in all aspects of life for persons with disabilities, including the educational environment. The below description of the ADA breaks down that information into easy to understand bites. EHDI defines the process of state or local provided services to screen babies for hearing loss, and provide support services for famililes as they navigate the early years as they prepare their children for school.