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How is the Stanford-Binet Scored?

The Stanford-Binet V (Stanford-Binet Intelligence Scales, Fifth Edition) measures a student’s nonverbal and verbal abilities in five different areas:

  • Fluid Reasoning – is a measure of the ability to think logically and solve problems in novel situations, independent of acquired knowledge. This area of the SB-5 test evaluates a student’s capacity to perceive relationships, identify patterns, and use abstract reasoning. It reflects a person’s capability to solve new problems, use logic in novel situations and identify patterns. Incorporating exercises to enhance fluid reasoning can be a significant part of a robust Stanford-Binet test prep program.
  • Knowledge – this subtest measures a student’s range of general information. This area reflects the degree to which a student has learned, understood and retained information from various domains, such as science, geography, history, and culture. It’s not merely about rote learning, but also includes a student’s ability to apply this knowledge effectively. A well-designed SB-5 test prep class would aim to boost this acquired knowledge and its application.
  • Quantitative Reasoning – involves the ability to comprehend quantitative concepts and relationships and to manipulate numerical symbols. Students are tested on their understanding of numbers, ability to perform mathematical computations, and problem-solving skills using numerical reasoning. To perform well on this section of the SB-5 test, students may need to focus on math skills development and numerical problem-solving exercises as part of their preparation.
  • Visual-Spatial Processing – measures the student’s ability to analyze and synthesize visual stimuli. It gauges a person’s ability to perceive, analyze and think in visual patterns, including the understanding of the relationship between objects and their spatial orientation. Building strong visual-spatial skills can be an important part of using practice questions online and in workbooks, as this can help improve a student’s capacity to process and interpret visual information.
  • Working Memory – assesses a student’s ability to temporarily hold and manipulate information in their memory. It involves tasks such as remembering a series of numbers or letters and being able to manipulate or reorder them. Working memory is a fundamental part of learning and problem-solving, making it an essential skill to hone during getting ready for the test.

Here are all the standard IQ Score ranges for the Stanford-Binet:

The test results are expressed as an IQ (Intelligence Quotient) score, with different ranges associated with varying levels of cognitive ability.

Here’s a detailed look at the standard IQ score ranges for the Stanford-Binet V:

  • Low Average (80-90):Individuals in this range demonstrate cognitive skills that are slightly below the average population. They may face challenges in certain academic or complex problem-solving tasks but can generally cope with everyday life situations.
  • Average (90-109): This is the range where the majority of people fall. Individuals within this range typically perform adequately in most school and work situations. They have a balanced cognitive ability and are capable of comprehending and solving conventional problems.
  • High Average (110-119): Individuals in this range exhibit above-average cognitive ability. They typically excel in many academic areas and demonstrate an increased capacity for understanding complex concepts and problem-solving.
  • High Achiever (120-129): People who score in this range are often high achievers, demonstrating superior cognitive abilities. They tend to excel in academic settings and are often perceived as quick learners who can handle more complex mental challenges.
  • Moderately Gifted (130-144): Moderately gifted individuals display an exceptional level of intelligence. They often excel acadically and are capable of understanding and solving highly complex problems. These individuals may require enrichment or accelerated learning programs to stay engaged and challenged.
  • Highly Gifted (145-160+): This is the topmost tier of the scale, indicating extraordinary intellectual capability. Highly gifted individuals are often capable of profound insights and can quickly master complex material. They may require special educational accommodations to meet their unique learning needs and to keep them motivated and challenged.

The SB5 normed total and subtest scores included on your child’s report are:

  • Nonverbal IQ (NVIQ) – this is the normed combined score taken from the five nonverbal subtests. This score represents an individual’s performance on the nonverbal subtests of the exam. These subtests assess problem-solving abilities, visual-spatial processing, and working memory without relying heavily on language skills.
  • Verbal IQ (VIQ) – this is the normed combined score taken from the five verbal subtests. The VIQ is derived from the verbal subtests of the Stanford-Binet V. These subtests primarily measure verbal reasoning and knowledge, including vocabulary and comprehension skills, with some aspects of memory also evaluated.
  • Full Scale IQ (Full Scale Intelligence Quotient, or FSIQ) – this is the normed combined score taken from all 10 subtests.
  • Fluid Reasoning – measures a student’s ability to use inductive or deductive reasoning while solving both verbal and nonverbal problems. This factor index measures the ability to solve problems, identify patterns, and make connections between different pieces of information. It involves deductive and inductive reasoning skills, crucial for learning and problem-solving in new, unfamiliar, or complex situations.
  • Knowledge – assesses your child’s understanding of general information, vocabulary, social behavioral standards, and common sense that kids within the same age range are also expected to know. This measures an individual’s general knowledge and comprehension across a range of subjects. It reflects the ability to learn from experience and education, and to apply that learning to practical situations.
  • Quantitative Reasoning – assesses an individual’s abilities with basic math concepts (such as identifying numbers and solving math word problems) as well as patterning, sequencing, ordering, classifying, comparing, and numerical problem-solving skills. his index measures an individual’s understanding of basic number concepts, mathematical problem-solving abilities, and capacity to apply logic to problems involving quantity and structure.
  • Visual-Spatial Processing – measures each student’s ability to identify patterns, relationships, spatial orientations, and how individual pieces relate to whole images on display as well as solve problems using pictures, images, diagrams, geometric shapes, maps or tables. This assesses the ability to analyze and synthesize visual-spatial information. Skills tested include understanding visual patterns, spatial orientation, and the ability to manipulate visual information mentally.
  • Working Memory – assesses a child’s ability to access information he or she has just seen or heard and how that data is inspected, transformed or sorted when answering a question or solving problems, such as repeating number and letter sequences in order, tapping blocks in a predetermined pattern or identifying visual and verbal absurdities shown on the test. This index measures the ability to retain and manipulate information in conscious awareness. It involves focusing attention, controlling impulses, and holding and updating information for problem-solving.
  • Percentile Rank (PR) – School districts use this number to compare each student’s individual test performance against a nationwide sampling of students born within the same three-month age range. A percentile rank of 80 means that child’s score was higher than 80% of students tested nationwide, and the PR ranges from 1-99. The percentile rank indicates the percentage of scores in its frequency distribution that are equal to or lower than it. For example, a test score that is greater than or equal to 75% of the scores of people taking the test is said to be at the 75th percentile rank.


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6 Responses

silva jackson

IQ 99/ Letter-word identification= 71 what is the interpretation of these results

Hi Silva,

For the most accurate interpretation of results, you’d want to contact the administrator of the test or a psychologist to interpret them for you!

can i get a free trial for a child with a moderate severe ASD?


We currently do not offer a free trial. Your best bet to try out materials would be a monthly membership, which you can purchase here. There may be additional resources in your school district or by reaching out to a psychologist.


I took the Stanford Binet in sixth grade I believe and Washington elementary school in Manchester Connecticut. How would I obtain the results?

Albert Reyes

I think your lQ TEST IS A LITTLE OUT OF REACH THERE IS NO ONE THATS GOING TO FINISH 50 , QUESTIONS IN 12 MINUTES OR 100 IN 25 Min’s show me someone that has, l’v taking meansa tests and scored 198 lQ brainiac 133 , ! Test scored Gifted 140 and many more so your assessment is of track , but I would like to see what Geniuss you picked for your comfort .

See if supports your child’s test by your school district. If you don't see your child's school district listed, check with us! We have practice for other tests as well.

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