Understanding Special Education Eligibility Categories

The Individuals with Disabilities Education Act (IDEA) is the nation’s special education law. IDEA's disability terms and definitions guide how states define disability and who is eligible for a free appropriate public education under special education law. To qualify for special education and related services under IDEA, children must meet specific criteria within one or more of 13 disability categories, and the disability must adversely affect their educational performance.

IDEA and its 13 Disability Categories

According to IDEA, school officials must undertake two steps to determine eligibility for these services. First, during an initial or reevaluation, the team must determine if your child meets the criterion for one of the 13 eligible disability categories. Second, they have to determine if the disability adversely affects your child’s educational performance, meaning it negatively impacts how your child is doing in school. It’s crucial to understand these categories, as they determine eligibility for special education services and influence the type of support a child receives.

The 13 disability categories in IDEA are:

Specific Learning Disability (SLD)
Speech or Language Impairment (SLI)
Other Health Impairment (OHI)
Autism Spectrum Disorder (ASD)
Intellectual Disability (ID)
Emotional Disturbance (ED)
Developmental Delay (DD)
Multiple Disabilities
Hearing Impairment (HI), including deafness
Orthopedic Impairment (OI)
Visual Impairment (VI), including blindness
Traumatic Brain Injury (TBI)
Deaf-Blindness (DB)

The Significance of Disability Categories

These categories are not mere bureaucratic labels; they represent real challenges that students face in meeting their educational goals. They are the areas that must be met to ensure learners are not left behind. Understanding these categories enables educators, parents, and advocates to create inclusive and supportive learning environments tailored to each student's unique needs.

Detailed Overview of the 13 Disability Categories

1. Specific Learning Disability (SLD)

This category covers a wide range of learning challenges that affect a student's ability to read, write, listen, speak, reason, or do math. It is estimated that about 35% of students with IEPs fall into this category. It is by far the most common category in special education. In the 2020-21 school year, around 35 percent of students who had IEPs qualified under this category.

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Definition: A disorder in one or more of the basic psychological processes involved in understanding or in using language, spoken or written, that may manifest itself in the imperfect ability to listen, think, speak, read, write, spell, or to do mathematical calculations. The term includes such conditions as perceptual disabilities, brain injury, minimal brain dysfunction, dyslexia, and developmental aphasia.

Common examples of specific learning disabilities (SLD):

Dyslexia
Dyscalculia
Written expression disorder (dysgraphia)

Eligibility Criteria: To be eligible under SLD, a student must meet specific criteria, including:

Inadequate achievement despite appropriate learning experiences and instruction.
Insufficient progress in meeting age or state-approved grade-level standards when using a process based on the student's response to scientific, research-based intervention.
A pattern of strengths and weaknesses in performance, achievement, or both relative to age, state-approved grade-level standards, or intellectual development.
The difficulties are not primarily the result of visual, hearing, or motor disabilities; intellectual disability; emotional disability; or environmental, cultural, or economic disadvantage.

2. Speech or Language Impairment (SLI)

This category includes students who have difficulty with understanding or use of language. This may interfere with learning and/or social adjustment in school and elsewhere. It is the second most common category in special education. A lot of kids have IEPs for speech impediments.

Definition: Communication disorders, such as stuttering, impaired articulation, a language impairment, or a voice impairment, that adversely affects a child’s educational performance.

Typical symptoms may include:

Poor listening skills
Unclear speech
Slow vocabulary development
Immature grammar
Difficulties with conversation
Unusual loudness or quality of voice
Stuttering

3. Other Health Impairment (OHI)

This is another commonly used category. It covers a wide range of conditions that may limit a child’s strength, energy, or alertness.

Definition: Having limited strength, vitality, or alertness, including a heightened alertness to environmental stimuli, that results in limited alertness with respect to the educational environment, that-

(i) Is due to chronic or acute health problems such as asthma, attention deficit disorder or attention deficit hyperactivity disorder, diabetes, epilepsy, a heart condition, hemophilia, lead poisoning, leukemia, nephritis, rheumatic fever, sickle cell anemia, and Tourette syndrome; and

(ii) Adversely affects a child’s educational performance.

Examples in this category include:

ADHD
Epilepsy
Sickle cell anemia
Tourette syndrome

4. Autism Spectrum Disorder (ASD)

ASD is a common developmental disability that affects social interaction, communication, and behavior, which in turn makes the students dealing with this cognitive disability unique. Some may have areas of enlightenment, while others wouldn’t have a shred to understand even some of the most basic social cues.

Definition: A developmental disability significantly affecting verbal and nonverbal communication and social interaction, generally evident before age three, that adversely affects a child’s educational performance. Other characteristics often associated with autism are engaging in repetitive activities and stereotyped movements, resistance to environmental change or change in daily routines, and unusual responses to sensory experiences.

Characteristics often associated with autism:

Repetitive activities and stereotyped movements
Resistance to environmental change or change in daily routines
Unusual responses to sensory experiences

5. Intellectual Disability (ID)

Intellectual Disability refers to a generalized neurodevelopmental disorder characterized by significantly below average intellectual functioning and deficits in adaptive behavior. Just keep in mind that these students can still learn and grow, just sometimes differently. Kids with Down syndrome often qualify for special education under this category.

Definition: Significantly subaverage general intellectual functioning, existing concurrently with deficits in adaptive behavior and manifested during the developmental period, that adversely affects a child’s educational performance.

6. Emotional Disturbance (ED)

This category covers mental health issues. It includes things like anxiety disorders, depression, and other behavioral motives.

Definition: A condition exhibiting one or more of the following characteristics over a long period of time and to a marked degree that adversely affects a child’s educational performance:

(A) An inability to learn that cannot be explained by intellectual, sensory, or health factors.

(B) An inability to build or maintain satisfactory interpersonal relationships with peers and teachers.

(D) A general pervasive mood of unhappiness or depression.

(E) A tendency to develop physical symptoms or fears associated with personal or school problems.

Examples include:

Anxiety disorder
Bipolar disorder
Oppositional defiant disorder

7. Developmental Delay (DD)

This category can be used for young kids who are late in meeting developmental milestones like walking and talking. Different states have different rules about this category. It’s also the only category in IDEA that has an age limit. It can’t be used after age 9.

Definition: The term developmental delay means a delay in one or more of the following areas: physical development; cognitive development; communication; social or emotional development; or adaptive [behavioral] development.

8. Multiple Disabilities

Many kids have more than one disability, such as ADHD and autism. But this category is only used when the combination of disabilities requires a highly specialized approach, such as intellectual disability and blindness.

Definition: Concomitant impairments (such as intellectual disability-blindness, or intellectual disability-orthopedic impairment), the combination of which causes such severe educational needs that they cannot be accommodated in special education programs solely for one of the impairments. Multiple disabilities does not include deaf-blindness.

9. Hearing Impairment, including deafness

This category includes a range of hearing issues that can be permanent or that can change over time. (This category does not include auditory processing disorder, which is considered a learning disability.) Students with this kind of disability cannot pick up the sounds happening in instructional environments or will not be able to follow instructional conversations.

Definition: An impairment in hearing, whether permanent or fluctuating, that adversely affects a child’s educational performance but that is not included under the definition of deafness in this section.

Deafness: means a hearing impairment that is so severe that the child is impaired in processing linguistic information through hearing, with or without amplification, that adversely affects a child’s educational performance.

10. Orthopedic Impairment

This category covers issues with bones, joints, and muscles. One example is cerebral palsy.

Definition: means a severe orthopedic impairment that adversely affects a child’s educational performance. The term includes impairments caused by a congenital anomaly, impairments caused by disease (e.g., poliomyelitis, bone tuberculosis), and impairments from other causes (e.g., cerebral palsy, amputations, and fractures or burns that cause contractures).

11. Visual Impairment, including blindness

This category covers a range of vision problems, including partial sight and blindness. But if eyewear can correct a vision problem, then a child wouldn’t qualify for special education under this category.

Definition: An impairment in vision that, even with correction, adversely affects a child’s educational performance.

12. Traumatic Brain Injury (TBI)

This category covers brain injuries that happen at some point after a child is born. These can be caused by things like being shaken as a baby or hitting your head in an accident.

Definition: An acquired injury to the brain caused by an external physical force, resulting in total or partial functional disability or psychosocial impairment, or both, that adversely affects a child’s educational performance. The term applies to open or closed head injuries resulting in impairments in one or more areas, such as cognition; language; memory; attention; reasoning; abstract thinking; judgment; problem-solving; sensory, perceptual, and motor abilities; psychosocial behavior; physical functions; information processing; and speech. TBI does not apply to brain injuries that are congenital or degenerative, or to brain injuries induced by birth trauma.

13. Deaf-Blindness

This category covers kids with severe hearing and vision loss. Their communication challenges are so unique that programs for just the deaf or blind can’t meet their needs. Such potential combinations of difficulties lead to extreme barriers for effective communication and learning.

Definition: 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 special education programs solely for children with deafness or children with blindness.

"Adversely Affects" Educational Performance

To qualify for special education, it's not enough for a child to simply have a disability. IDEA mandates that the disability must "adversely affect" the child's performance in school. This means the disability must have a negative impact on the student's academic progress, social-emotional development, or overall educational experience.

Variations Among States

While IDEA provides a federal framework, states may have their own specific guidelines and vocabulary regarding disability categories and eligibility criteria. For example, some states may split hearing impairment and deafness into two categories. It is important to review your state’s specific guidelines and vocabulary about the disability categories and their eligibility criteria. Additionally, states may vary in the number of categories and how they label them.

The Evaluation Process

IDEA requires an evaluation to determine if your child meets the criterion of a child with a disability. The team must complete a comprehensive evaluation, meaning the evaluation cannot use a single measure or assessment to determine eligibility. The evaluation data reviewed by the multidisciplinary team in connection with the determination of a student's eligibility based on being deaf or hard of hearing must include an audiological evaluation performed by a licensed audiologist and a communication assessment completed by the multidisciplinary team. When a student is identified with dyslexia and/or dysgraphia, the terms dyslexia and/or dysgraphia, as appropriate must be used in a student's evaluation report.

Multidisciplinary Team

The determination of whether a student suspected of having a specific learning disability is a child with a disability as defined in 34 CFR, §300.8, must be made by the student's parents and a team of qualified professionals, which must include at least one person qualified to conduct individual diagnostic examinations of children such as a licensed specialist in school psychology /school psychologist , an educational diagnostician, a speech-language pathologist, or a remedial reading teacher and one of the following:

the student's general education teacher;
if the student does not have a general education teacher, a general education classroom teacher qualified to teach a student of his or her age; or
for a student of less than school age, an individual qualified by the Texas Education Agency to teach a student of his or her age.

Considerations for Specific Disabilities

Visual Impairment: Information from a variety of sources must be considered by the multidisciplinary team that collects or reviews evaluation data in connection with the determination of a student's eligibility based on visual impairment in order to determine the need for specially designed instruction as stated in 34 CFR, §300.39(b)(3)
Developmental Delay: To use this eligibility category, multiple sources of data must converge to indicate the student has a developmental delay as described by one of the following: performance on appropriate norm-referenced measures, including developmental measures, indicate that the student is at least 2 standard deviations below the mean or at the 2nd percentile of performance, when taking into account the standard error of measurement (SEM), in one area of development.

Primary Disability Category

After completing the evaluation, you may wonder if your child can meet the eligibility criteria for multiple exceptionalities. The answer is yes. Ensure all categories are listed in the evaluation report and your child’s IEP. On the IEP, the eligibility category is the one that impacts your child’s education the greatest. When kids have more than one disability, it’s a good idea to include all of them in the IEP. This can help get the right services and supports in place. But the IEP will likely need to list a primary disability category. This is mainly for data-tracking reasons and will not limit the amount or type of services a child receives. Under IDEA, all disabilities are considered equal, and the order in which they are listed does not matter. Remember, the category or exceptionality does not determine the level of services your child receives. Also, remember that whether an exceptionality is primary vs secondary can change over time, as well as your child’s disability category.

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