If you're preparing for private school admissions on Oahu and you've heard of both the ISEE and the SSAT, here's the most useful thing I can tell you upfront: every major Oahu private school requires the SSAT, not the ISEE. Punahou, ʻIolani, HBA, Le Jardin, Saint Louis, Maryknoll — all SSAT. If you're applying to an Oahu school, this is the test you need.
So why does "ISEE prep Hawaii" get searched so often? Because plenty of families arrive on Oahu from states where the ISEE is standard, or they're applying to mainland boarding schools, or they've just heard both names and aren't sure which one applies to them. This guide answers that question clearly — explains what the ISEE actually is, why Oahu uses the SSAT instead, when the ISEE genuinely comes up, and how I can help regardless of which test your child needs.
What the ISEE is
Four levels, five sections, how scoring works
What Oahu schools require
The full picture — every major school confirmed
When you'd actually need the ISEE
Mainland boarding schools, military families, other situations
ISEE vs. SSAT: key differences
Scoring, format, math weight, retake rules
What the ISEE Actually Is
The ISEE — Independent School Entrance Exam — is a private school admissions test administered by the Educational Records Bureau (ERB). It's accepted by over 1,200 independent schools nationwide and is one of two main admissions tests for private schools in the US, the other being the SSAT.
The level your child takes is determined by the grade they're applying to enter — not the grade they're currently in.
Reading, Math, optional essay. Shorter and lower-stakes than the upper levels. Primarily used for elementary school entry.
Five sections: Verbal Reasoning, Quantitative Reasoning, Reading Comprehension, Mathematics Achievement, and an unscored essay. About 2.5 hours.
Same five sections as Lower Level, harder content. About 2 hours 50 minutes. The most common level for students applying to Oahu middle schools — if ISEE were used here.
Same five sections, most rigorous content. 160 questions, 160 minutes. The level used for high school boarding school applications and most mainland day school admissions.
What the five sections cover
How scores work
Each of the four scored sections produces a scaled score (760–940) and a stanine (1–9). Stanines are what schools actually look at — they translate your score into a simple 1–9 band relative to other ISEE test-takers. A stanine of 7–9 is competitive; 4–6 is average; 1–3 is below average.
The comparison pool matters
ISEE percentiles compare your child against other ISEE test-takers — not the general student population. Because these are all private school applicants, the pool is already academically stronger than average. A 50th percentile ISEE score doesn't mean average overall; it means average among a self-selected group of motivated applicants. This is why prep matters even for strong students.
There's no wrong-answer penalty on the ISEE — always answer every question, even if you're guessing. This is different from the SSAT, which subtracts a quarter point for wrong answers.
Students can take the ISEE once per testing window. There are three windows per year — Fall (August–November), Winter (December–March), and Spring/Summer (April–July) — for a maximum of three attempts per year. Testing is available in-person at member schools and Prometric centers, or at home via ERB's remote proctoring. Register at erblearn.org.
What Oahu Private Schools Actually Require
I researched every major Oahu private school's official admissions requirements. Here's what I found — sourced directly from each school's admissions pages, not from third-party aggregators.
If your school is on this list and you're starting to think about test prep, I work with students on the SSAT and other private school entrance exams — and I offer a free intro session to figure out where your child is and what a realistic prep plan looks like.
Always verify directly with the school
Admissions requirements can change year to year. The table above reflects current published requirements as of June 2026 — but before you register for any test, confirm with the school's admissions office that nothing has changed for your target cycle.
When You'd Actually Need the ISEE on Oahu
The ISEE does come up for Oahu families — just not for local school admissions. Here are the situations where it's genuinely relevant.
Applying to mainland boarding or day schools
Many mainland independent schools — particularly day schools in the Northeast and Mid-Atlantic — use the ISEE rather than the SSAT. If your child is applying to schools like Exeter, Andover, or competitive day schools in Boston or New York, check each school's requirements carefully. The ISEE is common for day school applications; the SSAT is more dominant for boarding schools. Some schools accept either.
Military families relocating from ISEE states
Military families PCSing to Oahu frequently arrive from states where the ISEE is the standard private school admissions test. If your child took the ISEE at your last duty station and is now looking at Oahu private schools, you'll need to switch to the SSAT — scores don't transfer between tests. The content overlaps significantly, so prior ISEE prep isn't wasted, but you'll want to do SSAT-specific practice before applying.
ERB/ISEE used for in-school assessment
Some families confuse the ISEE admissions test with the ERB assessments that certain private schools administer to their enrolled students as a progress measure. ERB (the same organization that makes the ISEE) provides in-school assessments used by some Oahu private schools for internal purposes — not for admissions. If your child's current school administers ERB tests, that's a different product from the ISEE.
Not sure which test you need
If you've heard both names and aren't sure which one applies, the answer for Oahu is almost always SSAT. But if you're applying to a mix of Oahu and mainland schools, you may genuinely need both. Check each school's admissions page directly — and if you're still unsure, I'm happy to look at your school list and tell you which tests you actually need before you register.
ISEE vs. SSAT: The Key Differences
If you're in a situation where you genuinely need to choose between the two tests — or take both — here's how they actually differ.
The practical takeaway: if your child is stronger in math than verbal, the ISEE's heavier math weighting may favor them. If they're a strong verbal student, the SSAT may work in their favor. But since Oahu schools exclusively use the SSAT, this only matters if you have genuine flexibility about which test to take — which means you're applying to a mix of Oahu and mainland schools that accept either.
Whether your child needs the SSAT for an Oahu school or the ISEE for a mainland application, I can help with prep for both. In a free intro session, I'll look at where they are now and what the test actually requires — so prep time goes toward what actually moves the score.
How to Prep for the ISEE (If You Need It)
If your situation genuinely calls for the ISEE — mainland applications, a school that accepts either test, or you're just landing on Oahu from a state where ISEE is standard — here's how to approach it.
Start with a diagnostic, not a study guide
Take a full-length official practice test under timed conditions before you do anything else. The ERB releases official practice materials at erblearn.org. Score it and identify which sections and question types are weakest — that's your study plan.
Take the math sections seriously
The ISEE is more math-heavy than the SSAT — roughly half the score comes from the two math sections. Students who prep primarily for verbal and reading and treat math as an afterthought typically see this in their results. Both math sections need dedicated work.
Vocabulary is the long game
The Verbal Reasoning section tests a specific kind of academic vocabulary — the kind that builds up over years of reading, not weeks of flashcards. That said, targeted vocab practice in the months before the test does help. Focus on roots, prefixes, and high-frequency ISEE word lists rather than trying to memorize thousands of words.
Don't skip the essay
The essay isn't scored, but it's sent directly to every school you apply to. Admissions officers read it as a window into how your child thinks and writes. A disorganized essay with basic errors can undercut a strong numeric score. Practice writing a few timed responses to ISEE prompts before test day.
Already familiar with the SSAT?
The ISEE and SSAT cover similar academic content — algebra, reading comprehension, vocabulary — so strong SSAT prep transfers reasonably well. The main adjustment is the two-math-section structure and the no-penalty-for-guessing rule. Students who've prepped seriously for the SSAT typically need less ramp-up time on the ISEE than students starting from scratch.
If you're applying to Oahu schools and a local school is on your list, you should also read my full guide to Oahu private school admissions — it covers the SSAT in detail along with the full application timeline, financial aid, and what catches families off guard.
