Students with disabilities are those who have physical or mental impairments that substantially limit major life activities like learning. There are 13 categories of disabilities defined by IDEA, including autism, deafness, developmental delays, emotional disturbances, and specific learning disabilities. To qualify for special education services under IDEA, a student's impairment must negatively affect their educational or functional performance compared to peers. General teaching strategies for students with disabilities include presenting information in multiple formats, allowing flexible demonstrations of learning, teaching memory strategies, and adjusting workload and time expectations with a focus on mastery over pace.