A Vanderbilt assessment is a questionnaire used to help diagnose ADHD in children, typically between ages 6 and 12. It comes in two versions: one filled out by a parent and one by a teacher. Together, these forms give a child’s doctor a picture of how the child behaves across different settings, which is essential for an accurate ADHD diagnosis. The scales were developed by the National Institute for Children’s Health Quality (NICHQ) and are among the most widely used ADHD screening tools in pediatric care.
What the Assessment Covers
The Vanderbilt does more than screen for ADHD. Each initial form has two main components: a symptom assessment and a performance section that measures how well the child is functioning in school, at home, and socially.
The symptom section screens for the core features of ADHD (both inattentive and hyperactive/impulsive types) plus several conditions that commonly occur alongside it. On the parent form, this includes separate question sets for oppositional defiant disorder, conduct disorder, and anxiety or depression. The teacher form covers those same areas and also flags potential learning disabilities. This matters because children with ADHD frequently have overlapping conditions, and identifying them early changes how treatment is approached.
The performance section asks the rater to evaluate how the child is doing in specific areas like academic performance, classroom behavior, and relationships with peers and family members. A child can have plenty of ADHD-like symptoms, but unless those symptoms are actually causing problems in daily life, the assessment won’t meet the threshold for a positive screen.
Parent Form vs. Teacher Form
The parent version is longer. It contains 47 symptom questions and 7 performance questions, covering inattention (questions 1 through 9), hyperactivity/impulsivity (10 through 18), oppositional defiant behaviors (19 through 26), conduct problems (27 through 40), and anxiety/depression (41 through 47).
The teacher version is shorter, with 35 symptom questions and 8 performance questions. It consolidates oppositional and conduct behaviors into a single section and adds questions about learning difficulties, which makes sense given that teachers observe academic skills more directly than parents do. Both forms use the same scoring system for the core ADHD symptoms, so results can be compared side by side.
Doctors typically ask for both forms to be completed because ADHD symptoms should be present in more than one setting. A child who struggles to focus only at school, or only at home, may have something else going on entirely.
How Scoring Works
Each symptom question is rated on a scale from 0 (never) to 3 (very often). For the ADHD sections, a score of 2 or 3 on a given item means that behavior is happening often enough to count toward a positive screen. Performance questions use a separate 1-to-5 scale, where higher numbers indicate greater difficulty.
To screen positive for the predominantly inattentive type of ADHD, a child needs to score a 2 or 3 on at least 6 of the 9 inattention questions. They also need to show impairment on the performance section, specifically scoring a 4 or higher on at least two performance items, or a 5 on at least one. The same structure applies to the hyperactive/impulsive type, just using questions 10 through 18 instead. If a child meets criteria for both inattention and hyperactivity/impulsivity, the result points toward the combined type of ADHD.
This dual requirement, symptoms plus real-world impairment, is a key feature of the assessment. It mirrors the diagnostic criteria in the DSM, where ADHD can only be diagnosed if symptoms interfere with functioning in at least two settings.
Who the Assessment Is Designed For
The Vanderbilt was originally developed and validated for children ages 6 to 12. However, the American Academy of Pediatrics notes that the scales are applicable to other age groups as well, including preschoolers and adolescents up to age 18. In practice, most pediatricians use the tool during elementary and middle school years, when ADHD symptoms tend to become most noticeable in structured classroom environments.
How Accurate It Is
The Vanderbilt parent scale has strong psychometric properties. Validation studies have found it has a sensitivity above 98%, meaning it correctly identifies nearly all children who actually have ADHD. High sensitivity is important in a screening tool because the goal is to avoid missing cases. That said, the Vanderbilt is a screening instrument, not a standalone diagnostic test. A positive result tells the doctor that further evaluation is warranted, and the final diagnosis comes from a clinician’s overall assessment combining the Vanderbilt scores with a clinical interview, developmental history, and ruling out other explanations for the symptoms.
Screening for Co-occurring Conditions
One of the Vanderbilt’s most useful features is that it doesn’t look at ADHD in isolation. The comorbidity sections screen for oppositional defiant disorder (a pattern of angry, argumentative, or defiant behavior toward authority figures), conduct disorder (more serious behavioral problems like aggression or rule-breaking), and anxiety or depression. These conditions overlap with ADHD at high rates. Roughly half of children with ADHD also meet criteria for at least one of these, and missing them can lead to incomplete treatment.
The scoring thresholds for these sections follow a similar logic to the ADHD sections: a certain number of items need to score in the “often” or “very often” range. If the screen is positive for a comorbid condition, the clinician can then pursue a more targeted evaluation.
Follow-Up Assessments
The Vanderbilt isn’t just used once. There’s a separate follow-up version of the form designed to track how well treatment is working over time. The follow-up scales focus on the 18 core ADHD symptom questions (9 for inattention, 9 for hyperactivity/impulsivity) and drop the comorbidity sections, making them quicker to complete.
After a child starts treatment, whether medication, behavioral therapy, or both, a follow-up visit is typically recommended about one month in. If medication is involved, monthly visits may continue until the right dose and timing are established. Once things stabilize, follow-up generally shifts to every three months during the first year and two to three times per year after that. At each of these checkpoints, having a parent and teacher fill out the follow-up Vanderbilt gives the doctor a concrete way to measure whether symptoms are improving, staying the same, or getting worse.
What to Expect When You’re Asked to Fill One Out
If your child’s pediatrician hands you a Vanderbilt form, it typically takes about 10 minutes to complete. You’ll rate a series of behaviors on a frequency scale, then answer a few questions about how your child is doing academically and socially. Be as honest as possible rather than trying to guess what the “right” answer is. The tool works best when it reflects what you actually observe day to day.
Your child’s teacher will receive a separate form, usually sent by the doctor’s office with your consent. Some clinicians request forms from two teachers to get a broader picture. The completed forms go back to the clinician, who scores them and uses the results alongside everything else they know about your child to determine next steps. A positive screen typically leads to a more in-depth evaluation, while a negative screen may prompt the clinician to explore other explanations for the concerns that brought you in.