What Bay Area Parents Need to Know Before Scheduling an IQ Test for Private School Admission

IQ testing for Silicon Valley Bay Area private school admission is a specific, in-person, standardized process administered by a licensed psychologist. Schools that include cognitive testing as part of the admissions process have rigorous academic curricula and/or are geared towards gifted learners. The test used depends on your child's age: WPPSI-IV for children under 6 years old and WISC-V for children 6+ years. The specific scores schools are looking for varies: continue reading to find out more. Booking early matters because psychologists in this area fill quickly during admissions season.

What Silicon Valley Bay Area private schools require an IQ test?

The Harker School, Nueva School, and Helios School require an IQ test (WPPSI-IV or WISC-V) depending upon the entry grade. See below for details. For Tessellations School, submitting an IQ test report is optional.

Which test should my child take, the WPPSI-IV or the WISC-V?

If your child is under 6 years old at the time of testing, they should take the WPPSI-IV (The Wechsler Preschool and Primary Scale of Intelligence, 4th edition). If your child is 6 years old or older on the day of testing, they should take the WISC-V (Wechsler Intelligence Scale for Children, 5th edition). The WPPSI-IV and the WISC-V are age-specific versions of the Weschler Tests of Intelligence. The WPPSI-IV and WISC-V both measure verbal reasoning, visual-spatial reasoning, fluid reasoning, working memory, and processing speed. However, different subtests are given on each of these tests due to age differences of children taking each version. Younger and older children each have pictures, puzzles and game-like tasks that appeal to their developmental age.

A young child in a bright classroom smiles while working on a drawing, capturing a moment of creativity and joy in a learning environment.

What areas of cognition are assessed on the Weschler IQ Test and what scores are provided?

Overall Composite Score

• Full Scale IQ (FSIQ): This is what is often referred to as the “IQ score.” The FSIQ is the most representative indicator of global intellectual functioning and general cognitive ability. It’s important to note that if your child has a large (≥1.5 standard deviation) difference among primary index scores, the FSIQ score may not be clinically meaningful.

Primary Index Scores

• Verbal Comprehension Index (VCI): Measures verbal reasoning, concept formation, and word knowledge.

• Visual Spatial Index (VSI): Evaluates spatial visualization, visual-motor integration, and the ability to analyze part-whole relationships.

• Fluid Reasoning Index (FRI): Assesses the ability to identify patterns, solve conceptual problems, and use visual reasoning.

• Working Memory Index (WMI): Measures the ability to hold information in short-term memory and manipulate it, indicating attention and concentration.

• Processing Speed Index (PSI): Measures visual scanning, psychomotor speed, and the quickness of mental processing.

What are the details regarding IQ testing for each Bay Area School? What score does my child need to receive admission?

Please note the response below is specific to the 2026-2027 admission cycle with students beginning at the school in the fall of 2027.

The Harker School

A cognitive assessment (WPPSI-IV for children 4-5 and WISC-V for children 6+) is required for applicants to Transitional Kindergarten through 2nd grade. In general, the Harker admissions team notes students that are successful at Harker generally receive a cognitive assessment with a Full Scale IQ score in the 110+ range.

Helios School

A cognitive assessment (WPPSI-IV for children under 6, WISC-V for children 6+) is required for applicants K-8. Helios’ admission team states there is not a hard cut-off score. Rather, they look at the primary index scores in addition to the Full Scale IQ score.

Nueva School

A cognitive assessment (WPPSI-IV for children under 6, WISC-V for children 6+) is required for applicants for Pre-K through 8th grade. While Nueva does not explicitly publish a hard cutoff score, the general consensus among admissions experts and families is that admitted students typically receive a Full Scale IQ score in the 130 to 140+ range.

Tessellations School

A cognitive assessment is optional for applicants K-8. The Tessellations admissions team asks that an IQ test be submitted, if available.

A young girl in a classroom sits with a joyful smile, holding colorful pencils and a plush toy, embodying the excitement of learning. A sheet of paper with writing rests on the table before her, highlighting her creative spirit.

What do I tell my child about the IQ test?

It’s helpful to tell your child they will be meeting with person called a psychologist who knows a lot about how children think and learn. Share that every child learns in their own way. Explain that your child will meet with the psychologist to do table-top activities. They will be shown pictures and asked questions. Most children find the experience interesting and fun. If your child appears nervous, it can help to show your child a picture of the psychologist (often a profile picture from their website where they are smiling). For younger children, it’s best to avoid the word “test” when explaining about the process.

What can I expect on the day of the assessment?

It’s important to leave plenty of time to travel to the psychologist’s office on the day of the IQ test. This will help your child feel calm since kids often sense their parents’ stress when rushed. The actual test administration takes between 40-90 minutes depending upon a child’s age, response style and need for breaks. Keep in mind psychologists often block off additional time to allow for a warm up activity. Your child will need to be alone with the psychologist during testing to protect the integrity of the test.

Why a great psychologist shares impressions about your child’s thinking process, not just a score or number.

Your child’s report should include behavioral observations (qualitative) as well as the scores (quantitative) listed below. A great psychologist helps you understand more about your child thinks and problem solves so you can best support their intellectual development. These insights can help you understand how your child learns and how to help them with homework. If you find yourself reading along with the behavioral observations in the report and nodding, that’s a good sign the psychologist truly saw your child.

Next Steps After the Assessment

Once you review the report and have any questions answered by the psychologist, you can choose whether to submit the IQ report to Bay Area private schools that require the test. You will need to first register on the Ravenna Admissions Platform. If applying to Harker or Nueva, you will need to ask the testing psychologist to upload the report to your child’s portal. If applying to Helios or Tessellations, parents can upload a copy of their report directly to the platform.

What to do if a score is lower than expected.

Be open and discuss surprises with the psychologist during a parent feedback session to get a better understanding of your child’s response pattern on specific tasks. Sometimes a child’s tendency to answer quickly or reluctance to guess at all can impact their performance. In addition, a lower score may sometimes reflect a child’s difficulty with flexibility with doing a less preferred activity. Other times, parents may misunderstand what a score means and the psychologist can provide clarification.

Pro-tip: Choose a psychologist who offers a parent feedback session. Some psychologists, like those at Juniper Psychology Group, include it in their flat fee. Even if it costs extra, it’s a worthwhile parenting investment to truly understand and interpret the report correctly.

How to Get the Most Out of Your Child’s IQ assessment

1. Choose an experienced psychologist; they will be adept at helping your child do their best on the test while having a positive experience. While the test is standardized, it’s very important for the psychologist to read your child’s cues. Some children are nervous and need extra help feeling at ease. Others are very excited for the 1:1 attention with a new adult and need firm guidance about following directions and saving chit-chat for testing breaks so they can do their best on testing activities. Clinical psychologists who provide psychotherapy to children who experience anxiety, attention challenges or developmental differences are often well poised to help children with a wide variety of presentations do their best. Remember, you can only have your child tested one time within 12 months so it makes sense to choose a psychologist carefully.

2. Make sure the psychologist has dedicated warm-up time with your child to help them feel at ease talking and interacting with the examiner before beginning testing. Some of the subtests involve children’s verbal responses so it’s helpful for a child to demonstrate comfort talking to the psychologist before testing begins. It’s also important for psychologists to include plenty of time for testing breaks so the testing can proceed at your child’s pace.

3. Inform the psychologist in advance if you anticipate your child may have difficulty talking to the examiner or separating from a parent. It is also important to tell the psychologist if English is not your child’s strongest language or if your child has a significant articulation difficulty.

4. Choose a psychologist who offers a parent feedback session. This is often the most overlooked piece. A parent feedback session provides the opportunity for parents to ask specific questions regarding information in the report and to clarify what certain scores do and do not mean. At Juniper Psychology Group, we believe so much in the importance of this parent feedback session that we include it as part of every IQ test we administer.

5. Do not purchase or use any IQ “test prep” materials with your child.  This can invalidate the testing results.

The goal of the IQ assessment is never to reduce your child to a score. It is to better understand how they think and problem-solve so you can choose a school environment in which they will thrive.

If you are preparing for Bay Area private school admission, we encourage you to learn more about IQ testing at Juniper Psychology Group. Here you can find answers to FAQs about our testing process and view our available testing times. If you have additional questions, you can always reach out through our contact page. We are here to help your family navigate this process with clarity and confidence.