Intellectual Disability

Disability Categories

Definition

An IDEA disability category characterized by significantly below-average general intellectual functioning (typically an IQ of approximately 70 or below) and deficits in adaptive behavior, both manifested during the developmental period. Students with ID need instruction in academic, functional, and life skills.

Legal Reference:34 C.F.R. § 300.8(c)(6)

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Related Terms

Adaptive Behavior Assessment

An evaluation that measures a student's ability to perform everyday life skills such as communication, self-care, social skills, and independent living. Adaptive behavior assessments are particularly important in determining eligibility for intellectual disability and for planning functional life skills instruction.

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