1.  Autism
A disorder characterized by impairments in social skills, communication skills, and repetitive or ritualistic behaviors.
Autism Society of America
TEACCH (Treatment & Education of Autistic Children)

2. Behaviorally-Emotionally Disabled
A disorder characterized by inappropriate behavior under normal conditions, which persists over time and interferes with the child's learning. 
Council for Children with Behavioral Disorders (CCBD)

3.  Deaf-Blind
A disorder of coexisting hearing and visual impairments.

4.  Hearing Impaired
A condition where mild to profound hearing loss is present and instructional modifications are needed.

5.  Mentally Disabled
A disorder characterized by subaverage intellectual functioning as well as deficits in adaptive behavior.
American Association on Mental Retardation

6.  Multihandicapped
A condition that exists when students have a cognitive and/or behavioral disability in combination with one or more other disabilities.

7.  Orthopedically Impaired

A condition where orthopedic impairment impacts a student's educational performance. Examples are students with cerebral palsy, multiple sclerosis, spina bifida, or spinal cord injuries.

8. Other Health Impaired

Conditions where students have chronic or acute health problems that put limitations on the body's physical well-being and require medical attention.  Examples are students with asthma, diabetes, ADHD, or cancer.
Asthma and Allergy Foundation of America (AAFA) 
Children & Adults with Attention Deficit Disorder (CHADD)
Attention Deficit Disorder Association   

9.  Developmentally Delayed

Conditions of significant delay in development in children ages 3 - 7, which requires special education services. 

10. Specific Learning Diabled

A disorder that is characterized by signficant discrepancy in a students's ability and achievement in one or more of these areas: speaking, writing, thinking, spelling, reading, listening, and mathematics.
LD Online - Resource for parents & teachers

11.  Speech - Language Impaired

A disorder caused by an impairment in articulation, language, voice, and/or fluency.

12.  Traumatic Brain Injury

An acquired condition caused by severe head trauma that impairs a student's physical and cognitive abilities. 

13.  Visually Impaired

A visual impairment that, even when corrected, adversely affects a student's educational performance.

Other Resources on the Web

Exceptional Children's Assistance Center

National Center for Children with Disabilties (NICHCY)

Disability Resources on the Internet 

Students with Disabilities
The following is a list of eligibility areas for students with disabilities and a brief description of each.  Links to additional information are provided where applicable.
Adapted from Procedures:
Governing Programs and Services for Children with Disabilities August 2000 edition