Disproportionality in Special Education Identification
Examine racial and ethnic differences in disability identification, interpret risk ratios, and evaluate how district policies and assessment practices may contribute to disproportionate outcomes.
Reading Assignment
Lai, Lipscomb, & Johnson (2024). Appropriate Identification of Children with Disabilities for IDEA Services: A Report from Recent National Estimates.
Assigned reading: pp. 16–21
Focus on the report's discussion of significant disproportionality, identification patterns, district practices, and responses intended to improve appropriate identification.
Pay particular attention to the distinction between identifying group-level disparities and determining why those disparities occur.
Open Required Reading (PDF) ↗1. Understanding Disproportionality
Disproportionality occurs when students from a particular demographic group are represented in a disability category at a rate that differs from an appropriate comparison group.
These differences can reflect multiple interacting influences, including differences in access to instruction, referral decisions, evaluation procedures, educational opportunities, and actual student support needs.
Overidentification and Underidentification
Overidentification refers to inappropriate identification of students as having disabilities. Underidentification occurs when students with disabilities are not identified or do not receive needed evaluation and services.
An equitable identification system must address both concerns. Reducing a group's identification rate without examining individual student needs could increase the risk of underidentification.
2. Interpreting Risk Ratios
A risk ratio compares the proportion of students identified in one group with the proportion identified in a comparison group.
For example, consider the following fictional district data:
| Group | Students | Identified | Identification rate |
|---|---|---|---|
| Group A | 500 | 75 | 15% |
| Group B | 1,000 | 100 | 10% |
The identification risk ratio is 15% divided by 10%, or 1.50.
In this example, Group A has 1.5 times the identification rate of Group B.
Risk ratios should be examined alongside group sizes, educational opportunity, disability categories, evaluation quality, and relevant district policies.
3. How Disparities Can Develop
Referral Practices
Referral decisions may be influenced by classroom expectations, behavioral interpretations, staff experience, and access to general education supports.
Assessment Procedures
Instruments may introduce interpretive limitations when language demands, normative representation, or cultural assumptions are not adequately considered.
Educational Opportunity
Differences in instructional quality, attendance, educational continuity, and access to interventions may contribute to achievement patterns that influence referrals.
4. District Responses to Disproportionality
The assigned report addresses district practices concerning appropriate identification and responses to significant disproportionality.
A defensible improvement process begins with examining identification data by demographic group, disability category, and other relevant characteristics.
District teams can then review whether referral practices, assessment selection, instructional opportunities, and eligibility procedures warrant additional attention.
Progress monitoring should consider both equitable identification patterns and whether individual students continue to receive appropriate evaluations and services.
Interpreting Identification Risk
A district reports that 12% of students in Group A and 6% of students in Group B are identified in a particular disability category.
Which interpretation is most defensible?
Investigating Possible Contributors
A district finds a disparity in emotional disability identification. Match each observation to the most relevant area of investigation.
Choosing an Equitable District Response
A district identifies elevated disability identification rates among one demographic group.
The team proposes several responses. Evaluate each action as an appropriate first response or one requiring revision.
Lesson Synthesis
The 2024 report provides a framework for examining how identification policies and district practices relate to equitable special education identification.
Risk ratios help identify differences requiring investigation, but they do not independently establish inappropriate identification or its causes.
For a psychologist working in schools, the practical responsibility is to integrate population-level data with careful referral review, culturally responsive assessment, and individualized eligibility decisions.