ISEE Prep in San Diego: Levels, Scoring and When to Start (2026 Parent Guide)
Updated: Oct 19
If your child is applying to The Bishop's School, La Jolla Country Day, Francis Parker, Cathedral Catholic or Pacific Ridge, the Independent School Entrance Exam is probably on your calendar. It is also, for most families, the least understood part of the application.
This guide covers the parts parents actually ask about: which level your child sits, how the scoring works, how many times they can test, and when preparation should start. All test mechanics below reflect ERB's current published format.
Which level does my child take?
The level is determined by the grade your child is applying to, not the grade they are in now.
Primary — Applying to grades: 2–4, Typically currently in: Grades 1–3
Lower — Applying to grades: 5–6, Typically currently in: Grades 4–5
Middle — Applying to grades: 7–8, Typically currently in: Grades 6–7
Upper — Applying to grades: 9–12, Typically currently in: Grades 8–11
Most San Diego families we work with are preparing for the Middle Level, for seventh and eighth grade entry, or the Upper Level, for ninth grade entry.
What is actually on the test
For Middle and Upper Level, the exam runs about 2 hours 40 minutes plus two breaks:
Verbal Reasoning — Questions: 40, Time: 20 minutes
Quantitative Reasoning — Questions: 37, Time: 35 minutes
Reading Comprehension — Questions: 36, Time: 35 minutes
Mathematics Achievement — Questions: 47, Time: 40 minutes
Essay — Questions: 1 prompt, Time: 30 minutes
Lower Level is shorter, about 2 hours 20 minutes, with fewer questions per section.
Look closely at Verbal Reasoning: 40 questions in 20 minutes, which is 30 seconds each. That single line explains most of what goes wrong on test day. Students who approach it like a reading test run out of time. It is a vocabulary and logic sprint, and it has to be trained as one.
The essay is not scored, but it is sent to every school your child applies to. Admissions officers read it. Treating it as optional is a mistake we see regularly.
How ISEE scoring actually works
This is the part that confuses nearly every family, and it is worth getting right.
Your child does not get a percentage. Each section produces a scaled score, a percentile, and a stanine from 1 to 9. The stanine is what schools look at first.
The scale is not intuitive, because a 7 out of 9 instinctively reads like a mediocre 78%. It is not.
1–3 — What it means: Below average
4–6 — What it means: Average
7–9 — What it means: Above average
Two things follow that parents are rarely told.
First, the comparison group is other applicants, not all students. Your child is being measured against the pool of students applying to independent schools, which is already a selective group. An average stanine in that pool is a stronger result than it sounds.
Second, competitive schools generally look for the upper band, but no school publishes a cutoff, and any tutor who quotes you an exact number for a named school is guessing. Admissions reads the ISEE alongside grades, teacher recommendations, the essay and the interview. A strong score opens the conversation. It does not decide it on its own.
You get up to three attempts, but not whenever you want
Students may test up to three times in a 12-month admission cycle, once in each testing season:
Fall: August through November
Winter: December through March
Spring/Summer: April through July
This rule drives the entire preparation calendar, and families who learn it late lose options. If your child sits the test cold in the fall to "see how it goes" and the result is weak, the next attempt is not next month. It is the winter season, which may land after application deadlines.
The practical implication: prepare before the first attempt, not after it. Treat the first sitting as the one that counts, because it may be the only one that lands inside your timeline.
Scores arrive in about three to five days for the online test, five to ten days for paper at grades 5 through 12.
ISEE or SSAT?
Some San Diego schools accept either. When a family has a genuine choice, the differences worth knowing:
The ISEE penalizes nothing for guessing, so every question should be answered. Its math leans slightly more toward quantitative comparison and reasoning.
The SSAT deducts a quarter point for wrong answers on most levels, which changes guessing strategy entirely, and its verbal section leans harder on analogies.
Neither is easier in the abstract. The better question is which format suits your child's instincts. A student who reasons quickly under time pressure often fits the ISEE; a student with unusually strong vocabulary may do better on the SSAT. If the schools on your list accept both, it is worth a short diagnostic on each before committing.
Check each school's requirement first. Several San Diego schools specify one or the other.
When should preparation start?
For most students, eight to twelve weeks of consistent work before the first sitting is the right window. Long enough to build vocabulary and fix recurring math gaps, short enough to hold a student's attention.
What that time is spent on matters more than its length. For most students the order is:
A diagnostic first. Prep without a baseline is guesswork. We want to know which of the four sections is actually costing points before planning anything.
Vocabulary, started immediately. It is the slowest-moving piece and the one that cannot be crammed. Starting it in week one and running it throughout beats a panic push at the end.
Timing under real conditions. Especially Verbal Reasoning at 30 seconds per question. Students need to feel that pace before test day, not discover it.
The essay, practiced at least twice. Thirty minutes, handwritten or typed as they will actually take it.
How we work with ISEE students
Every session is one-on-one. There are no ISEE classes here, because a student who needs vocabulary work and a student who needs quantitative reasoning work should not be sitting in the same hour.
We start with a diagnostic, build a plan around the student's target schools and testing season, and send parents a written report each week covering what improved, what still needs work and what comes next. Sessions are hourly with no long-term package required, which means the plan can flex as the student's needs become clearer.
We work with students from and applying to The Bishop's School, La Jolla Country Day, Francis Parker, Cathedral Catholic, SDJA and Pacific Ridge, so preparation is planned around the schools actually on your list.
If you want to talk through timing for your child, call or text (858) 461-8211, or see our high school entrance exam tutoring page.
— Richard Stern, Founder, Carmel Valley Test Prep
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