WEST-E Special Education (070)

The Individuals with Disabilities Education Act (IDEA) defines 13 disability categories. To be eligible for special education, a student must (1) meet the criteria for at least one category and (2) because of that disability, need specially designed instruction. For most categories the definition also requires that the condition adversely affects educational performance. A medical or clinical diagnosis alone does not establish eligibility, and a label never determines placement or services—those are based on individual needs.

Washington implements IDEA through WAC 392-172A. State terminology differs slightly from federal wording: Washington uses emotional/behavioral disability (EBD) for the federal category of emotional disturbance, and it lists deafness and hearing loss as eligibility categories. Washington may also identify young children under developmental delay; because the permissible age range is set by the state within federal limits, check the state’s current age range rather than assuming one.

Specific learning disabilities are the largest category of students receiving special education. SLD is a disorder in one or more basic psychological processes involved in understanding or using spoken or written language that may show up as an imperfect ability to listen, think, speak, read, write, spell, or do mathematical calculations. The disability is intrinsic to the individual and presumed to involve central nervous system dysfunction. The term includes conditions such as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia. It excludes learning problems primarily caused by visual, hearing, or motor disabilities; intellectual disability; emotional disturbance; or environmental, cultural, or economic disadvantage.

Characteristics include unexpected underachievement despite adequate instruction, weak phonological processing, working-memory limitations, slow processing speed, and executive-function difficulties. Students often have average or above-average intelligence with an uneven profile. Identification may use a severe discrepancy between ability and achievement, a response to intervention (RTI/MTSS) process, or a pattern of strengths and weaknesses; current federal regulations do not allow states to require the discrepancy model, and Washington districts may use discrepancy or RTI-based methods according to their procedures. Before identifying SLD, the team must rule out that underachievement is due to a lack of appropriate instruction in reading or math.

Intellectual disability involves significant limitations in both intellectual functioning and adaptive behavior, with onset during the developmental period (the AAIDD definition specifies before age 22). Intellectual functioning is measured by individually administered IQ tests; a score of about 70 or below (approximately two standard deviations below the mean of 100) indicates significant limitation, considering measurement error. Adaptive behavior includes conceptual (language, reading, money, time, number concepts), social (interpersonal skills, responsibility, following rules, avoiding victimization), and practical (self-care, health and safety, schedules, transportation, occupational) skills.

Severity is now classified mainly by adaptive functioning and the intensity of supports needed (intermittent, limited, extensive, pervasive). Older IQ-based bands still appear in texts and on exams.

Characteristics include a slower rate of learning, difficulty with abstract concepts, problems with attention to relevant features of a task, limited short-term memory, difficulty with generalization and transfer, limited metacognitive skills, and delayed language. Instruction emphasizes systematic, explicit teaching; task analysis; functional and age-appropriate skills; community-based instruction; and planned generalization.

Under IDEA, emotional disturbance means one or more of the following characteristics exhibited over a long period of time and to a marked degree that adversely affects educational performance:

• An inability to learn that cannot be explained by intellectual, sensory, or health factors.
• An inability to build or maintain satisfactory interpersonal relationships with peers and teachers.
• Inappropriate types of behavior or feelings under normal circumstances.
• A general pervasive mood of unhappiness or depression.
• A tendency to develop physical symptoms or fears associated with personal or school problems.

The term includes schizophrenia. It does not apply to students who are socially maladjusted unless they also meet the criteria for emotional disturbance. Washington uses the term emotional/behavioral disability. Behaviors are grouped as externalizing (aggression, defiance, disruption, conduct problems) and internalizing (anxiety, depression, withdrawal, somatic complaints); internalizing students are frequently under-identified because they do not disrupt class. Many students have co-occurring learning disabilities, ADHD, language disorders, or trauma histories. Effective programming combines structured environments, clear and consistent expectations, positive behavioral interventions and supports, explicit social-emotional instruction, strong teacher–student relationships, self-regulation training, and coordination with mental health services.

Autism is a neurodevelopmental disability significantly affecting verbal and nonverbal communication and social interaction, generally evident before age 3, that adversely affects educational performance. Clinically, autism spectrum disorder involves (1) persistent deficits in social communication and interaction across contexts—social-emotional reciprocity, nonverbal communication, and developing and maintaining relationships—and (2) restricted, repetitive patterns of behavior, interests, or activities—stereotyped movements or speech (hand-flapping, rocking, echolalia), insistence on sameness, highly restricted or intense interests, and hyper- or hypo-reactivity to sensory input. Symptoms are present early but may not fully appear until social demands exceed capacities.

Autism occurs across all intellectual levels; many students have uneven profiles with significant strengths (visual processing, rote memory, a focused interest area). Co-occurring conditions include anxiety, ADHD, intellectual disability, epilepsy, sleep problems, and gastrointestinal issues. Evidence-based practices include applied behavior analysis procedures (discrete trial training, naturalistic interventions, pivotal response treatment), structured teaching and visual schedules, social narratives, video modeling, peer-mediated interventions, AAC, and sensory accommodations. Early intensive intervention improves outcomes. The educational eligibility team determines IDEA eligibility; a medical diagnosis is neither required nor sufficient.

Speech or language impairment means a communication disorder—such as stuttering, impaired articulation, a language impairment, or a voice impairment—that adversely affects educational performance. Speech disorders affect sound production; language disorders affect understanding or use of spoken, written, or symbolic language.

Developmental language disorder (formerly specific language impairment) is a significant language difficulty without a clear cause such as hearing loss, intellectual disability, or neurological condition; signs include late talking, slow vocabulary growth, persistent grammatical errors, and word-finding problems. Speech-language pathologists provide assessment, direct and classroom-based intervention, and consultation. Classroom supports include extra processing and wait time, visual supports, pre-teaching vocabulary, and structured opportunities to communicate.

Visual impairment means an impairment in vision that, even with correction, adversely affects educational performance; it includes both partial sight and blindness. Legal blindness is visual acuity of 20/200 or less in the better eye with best correction, or a visual field of 20 degrees or less. Low vision is impairment that cannot be fully corrected but leaves usable functional vision. Conditions may affect acuity, field, light sensitivity, color perception, or—in cortical/cerebral visual impairment (CVI), a leading cause of visual impairment in children—the brain’s processing of visual input. A functional vision assessment and learning media assessment determine the appropriate reading medium (regular or large print, braille, audio, or a combination). Students need instruction in the expanded core curriculum: compensatory skills (including braille), orientation and mobility, assistive technology, independent living, social interaction, recreation, career education, sensory efficiency, and self-determination.

Deafness is a hearing impairment so severe that the child cannot process linguistic information through hearing, with or without amplification. Hearing impairment (Washington: hearing loss) is permanent or fluctuating impairment that adversely affects educational performance but does not meet the definition of deafness. Loss is described by degree (mild, moderate, severe, profound), type (conductive—outer/middle ear, often medically treatable; sensorineural—inner ear or auditory nerve, usually permanent; mixed), and configuration (unilateral or bilateral; stable, progressive, or fluctuating). Age of onset matters: prelingual loss (before language develops) has greater effects on spoken language than postlingual loss.

Educational considerations include acoustic accessibility (reducing background noise, FM/DM or sound-field systems), visual access (preferential seating, captioning, interpreters, visual cues), language development, social-emotional support, and respect for Deaf culture. Placement options range from general education with support to self-contained programs and schools for the deaf.

Deaf-blindness means concomitant hearing and visual impairments, the combination of which causes such severe communication and other developmental and educational needs that they cannot be accommodated in programs solely for children with deafness or blindness. Students have very limited access to incidental learning, so they require systematic instruction in communication, orientation and mobility, and daily living skills, often with an intervener. Communication methods include tactile sign language, object symbols, touch cues, calendar systems, and AAC. Common causes include CHARGE syndrome, Usher syndrome, prematurity, and congenital infections.

Orthopedic impairment means a severe orthopedic impairment that adversely affects educational performance, including impairments caused by congenital anomaly, disease (e.g., bone tuberculosis, poliomyelitis), and other causes (e.g., cerebral palsy, amputations, fractures or burns causing contractures). Cerebral palsy results from damage to the developing brain affecting movement and posture and may co-occur with intellectual disability, seizures, and sensory impairments. Spina bifida is a neural tube defect causing varying paralysis and often bowel and bladder involvement. Muscular dystrophy (e.g., Duchenne) causes progressive muscle weakness. Supports include physical accessibility, positioning and adaptive seating, mobility and communication assistive technology, adapted materials, health management, and occupational and physical therapy.

Other health impairment means having limited strength, vitality, or alertness—including heightened alertness to environmental stimuli that results in limited alertness to the educational environment—due to chronic or acute health problems that adversely affect educational performance. The federal definition lists conditions such as asthma, ADD/ADHD, diabetes, epilepsy, a heart condition, hemophilia, lead poisoning, leukemia, nephritis, rheumatic fever, sickle cell anemia, and Tourette syndrome; the list is illustrative, not exhaustive.

ADHD is most often served under OHI (or under another category such as SLD or EBD if criteria are met, or under Section 504 if specially designed instruction is not needed). It involves a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning, with several symptoms present before age 12 in two or more settings. Presentations are predominantly inattentive (difficulty sustaining attention, following through, organizing; loses materials), predominantly hyperactive-impulsive (fidgeting, excessive talking, interrupting, difficulty waiting), and combined. Strategies include structured routines, preferential seating, chunked tasks, organizational supports, movement breaks, positive behavior supports, self-monitoring, and coordination with families and health care providers about medication.

Traumatic brain injury is an acquired injury to the brain caused by an external physical force, resulting in total or partial functional disability or psychosocial impairment that adversely affects educational performance. It applies to open or closed head injuries affecting cognition, language, memory, attention, reasoning, abstract thinking, judgment, problem solving, sensory/perceptual/motor abilities, psychosocial behavior, physical functions, information processing, and speech. It does not include brain injuries that are congenital, degenerative, or induced by birth trauma (injuries from internal causes such as stroke, tumor, or anoxia are not “external force” injuries; such students are usually served under another category such as OHI). Recovery is often uneven; students may retain previously learned information but struggle with new learning, fatigue, and changes in personality and behavior. Programming requires frequent reassessment, reduced cognitive load, structure and routine, external memory aids, rest breaks, and social-emotional support.

Multiple disabilities means concomitant impairments (such as intellectual disability with blindness, or intellectual disability with orthopedic impairment), the combination of which causes such severe educational needs that they cannot be accommodated in programs solely for one impairment. The term does not include deaf-blindness. Programs emphasize communication, functional and age-appropriate skills, positioning and health care, and coordinated related services.

States may use developmental delay for young children (federal limit: ages 3–9, or a subset of that range, at state discretion) who show delays in one or more areas—physical, cognitive, communication, social or emotional, or adaptive development—and who need special education. The category allows services without assigning a specific label when a condition is not yet clearly identifiable. Washington uses developmental delay for young children; confirm the current state age range. Before the child ages out of the category, the team must reevaluate to determine whether the child is eligible under another category. Infants and toddlers (birth to 3) are served under IDEA Part C early intervention through an Individualized Family Service Plan (IFSP).

Giftedness is not an IDEA category; services for highly capable students are governed by state law (in Washington, the Highly Capable Program). Gifted learners may show advanced reasoning, rapid learning, intense curiosity, and asynchronous development (advanced cognition alongside age-typical or delayed social, emotional, or motor skills). Twice-exceptional (2e) students are gifted and have a disability—for example, a highly capable student with dyslexia, ADHD, or autism. Their strengths can mask the disability, and the disability can mask the gift, so they are often under-identified for both. Programming addresses both areas: challenge in areas of strength plus specially designed instruction and accommodations for areas of need.