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Intellectual Disability
What is an intellectual disability?
Intellectual disability means significantly sub-average general intellectual functioning existing concurrently with deficits in adaptive behavior manifested during the developmental period that adversely affects a child’s educational performance.

[+] Read about the specific criteria used to determine eligibility in the educational category of intellectual disabilities.

Missouri Department of Elementary & Secondary Education – Criteria for Eligibility in the Educational Category of Intellectual Disability

A child displays an intellectual disability when:
  1. The child performs 2.0 Standard Deviations below their peers of equivalent age, ethnic and cultural background when measured by a standardized instrument of cognitive ability
  2. The child displays adaptive behavior consistent with measured cognitive ability. Adaptive behavior refers to the effectiveness with which a student meets the standards of personal independence and social responsibility expected of his/her age and cultural group. There should be a significant positive correlation between the student's intellectual ability and adaptive behavior. If not, the team must give careful consideration to other evaluative information and utilize professional judgment to determine the student's level of cognitive and adaptive functioning
  3. The disability adversely affects the child’s educational performance
NOTE ON PROFESSIONAL JUDGMENT: A child may also be deemed eligible if the child displays, through formal and informal assessment, a significant discrepancy even though the deviations do not fall below the criterion range. In such cases, sufficient data must be present in the evaluation report to document the existence of a significant discrepancy
[+] Other local, state and national resources related to intellectual disabilities

Local Resources
Assistance with Respite Care in the Home (ARCH)

Bridges Community Support Services

Children's Home Society of Missouri

Down Syndrome Association of St. Louis

Fragile X Resource Center of Missouri

St. Louis Arc

St. Louis Office for Developmental Disability Resources

St. Louis Regional Office

United Cerebral Palsy (UPC Heartland)

State Resources
Missouri Family to Family

Missouri Developmental Disabilities Council (MDDC)

National Resources
The Arc

National Association for Down Syndrome

National Down Syndrome Society

National Fragile X Foundation

Prader-Willi Syndrome Association

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12110 Clayton Rd, Town & Country, MO 63131  /  314.989.8100  /  314.989.8552 – 711 (Missouri Relay)

Special School District of St. Louis County (SSD) is a leader in providing special education services to students with disabilities and also provides a wide range of career and technical education programs.
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