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IQ Test Ages 2–90 (children 2–18)

Free Stanford-Binet Practice Test

The Stanford-Binet Intelligence Scales, Fifth Edition (SB5) is one of the most respected IQ tests in the world. Administered by a licensed psychologist, it measures five cognitive factors — fluid reasoning, knowledge, quantitative reasoning, visual-spatial processing, and working memory — and produces a Full Scale IQ (FSIQ) score.

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Ages 2–90
Age Range
5 Factors
Cognitive Areas
45–75 Min
Test Duration
FSIQ Score
Score Format

All Resources

Everything You Need to Prepare

Practice Questions
8 free questions
Flashcards
5 key terms
Study Guide
On this page
Books
2 study guides
Articles
2 guides

Test Structure

What the SB5 Covers

The SB5 assesses five cognitive factors, each with both verbal and nonverbal tasks. This dual-domain design makes it one of the most comprehensive and fairest IQ tests available.

Fluid Reasoning

Measures novel problem-solving without relying on prior knowledge — the purest measure of intelligence. Includes verbal and nonverbal tasks: inductive reasoning (finding rules from patterns) and deductive reasoning (applying rules to problems).

Knowledge + Quantitative Reasoning

Knowledge tests vocabulary and general information. Quantitative Reasoning measures mathematical problem-solving and numerical reasoning. Both sections have verbal and nonverbal formats, making the SB5 fair across language backgrounds.

Visual-Spatial & Working Memory

Visual-Spatial tests ability to perceive spatial relationships and form/pattern recognition. Working Memory assesses how much information a child can hold and manipulate — a key predictor of academic performance.

Study Strategy

Prep Tips for Parents

1
Prepare for the 1-on-1 format

The SB5 is administered individually by a psychologist — unlike group tests. Make sure your child is comfortable with adult-directed one-on-one activities.

2
Don't coach answers

An accurate FSIQ helps the psychologist understand your child and make good recommendations. Coaching artificially inflated scores undermines the test's diagnostic value.

3
Rest and eat well before testing

Cognitive performance is measurably affected by sleep and nutrition. The day before testing matters. No late nights or skipped breakfasts.

4
Pace for 45–75 minutes

The SB5 takes 45–75 minutes for most children. Let your child know ahead of time — knowing what to expect reduces anxiety and improves performance.

5
Request the full score report

The FSIQ is just the headline. The subtest breakdown reveals where your child is strongest and weakest — far more useful for educational planning.

Study Materials

Recommended Books

Handpicked study guides to complement your online practice. Affiliate links — we earn a small commission at no extra cost to you.

Gifted Children IQ Assessment Book

Assessing Gifted Children: A Practical Guide for Parents

What IQ tests measure, how to read score reports, and how to advocate for your child in gifted programs and schools.

Smart But Stuck Book

Smart But Stuck: Unlocking Your Child's Potential

For families navigating twice-exceptional children or unexpected IQ assessment results — how to move from testing to action.

Try a Question

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Sample Question Verbal

Doctor is to Hospital as Teacher is to ___

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Stanford-Binet Articles

Score Guide

Stanford-Binet V Scores Explained: What Does Your Child's FSIQ Mean?

A parent-friendly guide to SB5 FSIQ classifications, percentile ranks, and what gifted scores look like.

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Comparison

WISC-V vs Stanford-Binet V: Which IQ Test Is Right for Your Child?

The two most widely used IQ tests for children — how they differ and when psychologists choose one over the other.

Read article →

View all articles →

Common Questions

Frequently Asked Questions

What is the Stanford-Binet V?

A comprehensive IQ test measuring 5 cognitive factors, used for gifted identification, learning disability assessment, and educational planning. Ages 2–90.

How is SB5 different from WISC-V?

Both measure IQ; WISC-V is more commonly used for school-age children. SB5 has broader age range and is sometimes preferred for very young children or extremely gifted children (higher ceiling).

What is a gifted score on the SB5?

FSIQ 130+ (98th percentile) is typically "highly gifted"; 125+ qualifies for most gifted programs.

Who administers the Stanford-Binet?

Always a licensed psychologist or trained school psychologist — never self-administered.

Can you prepare for the SB5?

Minimally — the SB5 measures cognitive ability, not learned knowledge. Brief familiarization with the format is fine; intensive drilling is counterproductive.