If your child has an autism diagnosis, you may have seen the words “Level 1,” “Level 2,” or “Level 3” in the report. This guide explains what those levels mean, what they do not tell you, and how they connect to the support your child receives.
The short answer: the levels describe how much support a person needs today. They are a snapshot. They do not measure intelligence, potential, or worth.
Where the levels come from
Before 2013, clinicians used separate labels such as autistic disorder, Asperger’s syndrome, and PDD-NOS. The DSM-5 (the manual clinicians use to diagnose) replaced them with one diagnosis: autism spectrum disorder (ASD). It added three support levels to show how much help a person needs.
A clinician rates two areas:
- Social communication: back-and-forth conversation, eye contact, gestures, and making and keeping friendships.
- Restricted and repetitive behaviors: strong routines, repeated movements or speech, intense interests, and sensory differences.
A child can sit at one level in one area and a different level in the other.
Types of autism: the older labels
You may still hear people talk about “types” of autism. These terms came from earlier versions of the diagnostic manual:
- Autistic disorder: the classic form, with differences in social communication, language, and repetitive behaviors.
- Asperger’s syndrome: social and behavioral differences without a delay in early language.
- PDD-NOS (pervasive developmental disorder, not otherwise specified): used when a child showed some autism traits but did not meet the full criteria for the others.
The DSM-5 combined these into one diagnosis, autism spectrum disorder, because clinicians found the boundaries hard to draw. Children who once received one of these labels still have the same needs and strengths. The support levels below give a clearer picture of those needs.
What each level means
Level 1: requiring support
Without support in place, a child at Level 1 has noticeable challenges with social communication. They may speak in full sentences yet struggle with the give and take of conversation. They may find it hard to switch between activities. Many children at this level do well in a general education classroom with the right supports.
Level 2: requiring substantial support
A child at Level 2 shows clear difficulties with verbal and nonverbal communication, even with supports in place. Repetitive behaviors or a strong need for sameness appear often enough for others to notice. Changes in routine can cause real distress. Daily life usually needs regular help from adults.
Level 3: requiring very substantial support
A child at Level 3 has severe challenges with communication. They may use few words or none, and may communicate through gestures, pictures, or a device. Repetitive behaviors and difficulty with change strongly affect day-to-day life. These children need help with many daily activities.
What the levels do not tell you
- Intelligence. A child at any level can have average or above average intelligence. A child at any level can also have an intellectual disability. The level does not say which.
- Future outcomes. Children grow and learn. Support needs change with age, teaching, and the setting.
- What your child can do on their best day. Needs can look different at home, at school, and in new places. A level reflects a point in time.
You may also hear “high functioning” and “low functioning.” These are not clinical terms. They hide the fact that a child can be strong in one skill and need a lot of help in another. The level, plus a detailed look at skills, gives a clearer picture.
Can a child’s level change?
Yes. Many children need less support in some areas as they build skills. Stress, illness, and big transitions can raise support needs for a time. A level is a description of current needs, so a clinician may update it at a later evaluation.
How levels connect to ABA therapy
A level helps a clinical team understand how much support a child needs. It does not set the therapy plan. A Board Certified Behavior Analyst (BCBA) completes a separate assessment of your child’s communication, daily living, play, and behavior skills. The BCBA then writes goals around your child’s strengths and needs, and recommends the therapy hours and setting that fit those goals. Our guide to ABA therapy explains how that process works.
Two children at the same level can have very different plans. That is why the plan starts with your child, not the label.
Who assigns the level?
A qualified clinician, such as a developmental pediatrician, child psychologist, or neurologist, assigns the level during a diagnostic evaluation. Evaluations often include a structured observation such as the ADOS-2, a parent interview, and a review of development. Your child’s report should state the level.
If you are not sure whether to seek an evaluation, our free autism screening tool is a good first step. A screening is not a diagnosis. It helps you decide whether to talk with your pediatrician.
Frequently asked questions
Is Level 1 the same as Asperger’s syndrome?
Many people who once received an Asperger’s diagnosis would now fall under Level 1. The two are not identical, because the DSM-5 describes support needs and Asperger’s was a separate label.
Is one level better than another?
No level is better. Each level describes the amount of support a child needs right now. Children at every level learn, grow, and make progress.
Does my child need a level to start ABA therapy?
Your child needs a diagnosis from a qualified clinician. Insurance plans may have their own requirements. Our payments and insurance page covers the basics, and our team can check your benefits.
Will my child stay at the same level for life?
Not always. Support needs change as children learn new skills. A clinician may assign a different level at a later evaluation.
Next step
If your child has a diagnosis and you want to know what support could look like, start with a free benefits check. Our team will answer your questions and explain the next steps.
This article is for general education. It does not replace advice from your child’s clinician.
