ISEE vs SSAT: which test, and how they differ
Ask each school first: many accept both tests, and in some regions only one is offered. At Middle and Upper Level the ISEE has 160 four-choice questions (139 scored) and no penalty for a wrong answer. The SSAT has 150 scored five-choice questions plus 16 experimental ones, and a wrong answer costs a quarter of a point. E3n runs both and says it has no preference.
Updated October 31, 2026 · by AdmitTest
The short rule: the school list decides
E3n's own comparison page says many schools accept both, that some regions offer only one test, and that requirements can vary by school level and grade. E3n says over 1,200 independent schools accept the ISEE. We did not find a matching count for the SSAT, and we keep no school list of our own, because a list can go out of date.
Ask each admissions office: "Which entrance tests do you accept for the grade we are applying to, by what date, and do you prefer one?" If your list includes a school that takes only one test, that settles it.
The two tests side by side
Figures are E3n's for 2026-27, Middle and Upper Levels unless a row says otherwise. Sources are under the table.
| ISEE | SSAT | |
|---|---|---|
| Levels, by grade applying to | Primary 2, 3, 4; Lower 5-6; Middle 7-8; Upper 9-12 | Elementary 4-5; Middle 6-8; Upper 9 to postgraduate year |
| Questions | 160, of which 139 are scored and 21 are not; students are not told which (Lower: 127, 110 scored) | 150 scored, plus 16 in an unscored experimental section |
| Sections | Verbal 40, Quantitative 37, Reading 36, Math Achievement 47 | Verbal 60, Quantitative 50 (two parts of 25), Reading 40 |
| Verbal question types | Synonyms and sentence completion | Synonyms and analogies |
| Answer choices | 4 | 5 |
| Wrong answer | No penalty | Minus 1/4 point; a blank is 0 (Elementary: no penalty) |
| Calculator | Not allowed | Not allowed |
| Total time | 2 hours 40 minutes plus two 10-minute breaks | 3 hours 10 minutes, with two 10-minute breaks included |
| Writing, not scored | 30 minutes, one prompt, at the end. Chosen schools get a copy; families do not | 25 minutes, choice of 2 prompts, at the start. Schools get the sample; parents can buy a copy |
| Reported score | 760-940 per section, percentile and stanine; no total | Upper 500-800 and Middle 440-710 per section, percentile, and a total (Upper 1500-2400) |
| Test dates | No national calendar: Fall Aug-Nov, Winter Dec-Mar, Spring/Summer Apr-Jul; dates are in the registration portal | Six Standard paper dates, October to March, plus Flex, at-home and Prometric dates |
| Retakes | Once per season, up to 3 per school year | Up to 6 Standard paper tests and 1 Flex; 1 at home; 2 at Prometric |
| Fee at a school or Standard date | $170 | $177 |
| Fee at Prometric | $250 | $250 |
| Fee at home | $250, or $170 if school-administered | $263 |
| Scores arrive | Online 3-5 days; paper 5-10 days (grades 5-12) | Paper within about 2 weeks; at home and Prometric usually the Wednesday after testing |
Sources, all from E3n: ISEE or SSAT comparison (modes, dates, retakes, score timing); ISEE about page, Quick Facts 2026-2027, Upper Level guide (scored counts, from 2021) and score reports; SSAT about page, Upper Level, paper dates, guessing, Candidate Handbook and score reports. Fees change, and other options cost more or less, so check before you register.
If a school accepts both
E3n's comparison page suggests looking at these, in this order:
- Each school's requirements. Always first.
- How your child would test. Paper, computer, at home or at a Prometric center, and whether typing or handwriting the essay suits your child. Computer testing at a school or office is ISEE only. At-home SSAT testing is only for students physically in the US or Canada.
- Dates and retakes. What is close to you, what is open before the deadline, and the limits above.
- The Character Skills Snapshot. If a school requires it, E3n points to an SSAT bundle that costs less.
- Score timing. Near a deadline, confirm with the school before you register.
Two more limits come from the same page: a current 12th grader cannot take the SSAT and takes the ISEE Upper Level, and fee waivers exist for both tests with different details.
Our suggestion: try both formats, then decide
This is our view, not E3n's. If the school list leaves the choice open, have your child take a quick test of each and ask which felt workable. The SSAT adds analogies and asks a student to decide when to leave a question blank. The ISEE has no penalty, so a student answers everything, and at Middle and Upper it adds quantitative comparisons. Do not decide by comparing scores from practice: the scales differ, our tests are not equated to the real ones, and any scaled number on our results is an unofficial estimate.
We are an independent service and sell practice for both, so weigh this suggestion with that in mind. E3n also has its own practice: a free online sample test per ISEE level and a free 30-question SSAT mini test.
Our free tests: ISEE practice test and SSAT practice test. No account is needed. Paid plans are separate, so buy only the one you need: ISEE Practice Tests ($69) and SSAT Practice Tests ($69), each once, for 12 months. Our questions are written by us and are not from the real tests. Practice makes a format familiar; it cannot promise a score or a place.
Common questions
Is the ISEE or the SSAT harder?
No one can say for your child, and the scores are on different scales. E3n calls the two remarkably similar in content, difficulty and length by grade. What feels different is the format: the SSAT has five choices, a guessing penalty and analogies; the ISEE has four choices, no penalty, sentence completions and, at Middle and Upper, quantitative comparisons.
Do schools prefer one test?
E3n says it has no preference, but each school sets its own policy, and a policy can change by grade. We keep no list of which school accepts which test, so ask the admissions office of each school on your list.
Can my child take both?
E3n's limits are per test, and we found no rule against taking both. Whether it is worth the fees and the time is another question: if every school on your list accepts one test, one is enough to prepare for. Ask a school how it would treat two sets of scores before you register for both.
Should my child guess on each test?
On the ISEE, yes: only correct answers count, so a blank has no advantage. On the SSAT Middle and Upper, a wrong answer costs a quarter of a point and a blank costs nothing. E3n's handbook advises against random guessing and says a guess may be worthwhile once 2 of the 5 choices are eliminated.
Can I compare an ISEE score with an SSAT score?
Not directly. The ISEE reports 760 to 940 per section with no total. The SSAT Upper Level reports 500 to 800 per section with a total of 1500 to 2400. Each percentile also has its own comparison group. The estimates on our practice results are unofficial and do not convert from one test to the other.
Does practice for one test help with the other?
In our view, partly: reading, vocabulary and math carry over, but the question types, the guessing rule and the clocks differ. Once you know the test, practice for that one.