| A | B |
| mental retardation | significantly subaverage intellectual functioning along with deficits in adaptive behavior |
| emotional disturbance | characteristics such as poor relationships and inappropriate feelings or behavior that adversely affect educational performance |
| hearing impairment | an inability to hear even with the use of a hearing aid |
| learning disability | a significant discrepancy between ability and achievement caused by a processing deficit |
| speech and language impairment | a disorder, such as stuttering, impaired articulation, a language impairment, or a voice impairment that adversely affects a child’s educational performance |
| vision impairment | deficits in visual acuity or field of vision which adversely affects educational performance |
| ADHD | attention deficit hyperactivity disorder |
| hearing impairment | a hearing loss that adversely affects educational performance |
| orthopedic impairment | impairment of the skeletal system -- bones, joints, limbs, and associated muscles or dysfunction of the nervous system affecting movement |
| severe disabilities | individuals who require extensive on going support in more than one major life activity |
| multiple disabilities | concomitant impairments that cannot be accommodated in programs solely for one impairment |
| health impairment | limited strength, vitality, or alertness due to chronic or acute health problems which adversely affects educational performance |