Understanding Students with Disabilities
Domain 1: Understanding Students with Disabilities
This domain tests how well you recognize disability categories, learning and behavioral characteristics, and the impact of disabilities on academic and social functioning. Expect items that ask you to distinguish high-incidence from low-incidence disabilities and to avoid attributing learning problems to the wrong cause.
Core rules
- IDEA defines 13 disability categories. High-incidence categories in mild to moderate settings include specific learning disability (SLD), speech or language impairment, other health impairment (OHI), emotional disturbance, autism, and mild intellectual disability.
- SLD is not the same as low achievement. It requires a disorder in psychological processing that affects learning, and the team must rule out exclusionary factors such as lack of instruction, sensory impairment, or cultural and economic difference.
- Intellectual disability requires both significantly below-average intellectual functioning and deficits in adaptive behavior that appear during the developmental period.
- ADHD is usually served under OHI, not as a separate IDEA category. Autism and emotional disturbance have distinct definitional criteria, and emotional disturbance requires evidence of duration and educational impact.
- Characteristics matter instructionally: a decoding deficit suggests phonological intervention, while a comprehension deficit suggests vocabulary and strategy instruction.
Worked example
A 9-year-old has average reasoning ability, strong listening comprehension, and weak word reading and spelling. Tier 2 intervention produced little progress, and vision, hearing, attendance, and English proficiency are not explanatory. The team should suspect SLD with a phonological processing deficit rather than intellectual disability, because cognition and listening comprehension are intact, and rather than OHI, because no health condition explains the reading pattern. The evaluation should include multiple measures and the intervention response data.
Traps that cost marks
Do not treat a low test score alone as eligibility. Do not call ADHD an IDEA category. Do not ignore exclusionary factors or assume that a behavior problem is emotional disturbance without severity, duration, and impact.