ISEE vs SSAT: Which Private School Test Does Your School Require?

Most private schools that require admissions testing accept either the ISEE (Independent School Entrance Exam) or the SSAT (Secondary School Admissions Test) — and a significant number accept both. Understanding the differences helps you choose the right test for your child's strengths and your target schools.

At a Glance

Key Structural Differences

Guessing Penalty

This is the biggest practical difference. The SSAT subtracts ¼ point for each wrong answer. The ISEE does not penalize wrong answers — blank answers and wrong answers both score zero. This changes strategy significantly:

• On the ISEE: always guess, even if you have no idea. You can't hurt yourself.
• On the SSAT: only guess if you can eliminate at least one or two answer choices. Otherwise, leave it blank.

Students who tend to be impulsive guessers may do better on the ISEE. Students who are careful and methodical may do well on either.

Test Sections Compared

One important distinction: the SSAT uses verbal analogies as a major question type ("Cat is to kitten as dog is to ___"). The ISEE uses sentence completion instead ("The scientist was _______ in her approach, never accepting a hypothesis without thorough evidence"). Students who are strong at word relationships may prefer the SSAT; those with strong contextual reading may prefer the ISEE.

How Scores Are Reported

ISEE: Reports a scaled score and a percentile rank compared to students who took the same level in the past 3 years. This means you're compared only to private school applicants — a much more selective reference group than national norms.

SSAT: Also uses a percentile rank compared to other SSAT test-takers. SSAT percentiles tend to look lower than expected for the same reason — you're competing against a self-selected group of private school applicants.

Both tests also report stanine scores (1–9). Most top private schools are looking for stanines of 7–9 in the sections relevant to their program.

Which Test to Choose

• Check your target schools first. Many schools have a preference. Look at each school's admissions page before deciding.
• If your school accepts both: Consider which test plays to your child's strengths. Strong verbal-analogical thinkers often do better on SSAT. Strong readers with broad vocabulary may prefer ISEE.
• SSAT if you need more flexibility: More test dates (up to 8/year) means more chances to improve a score. The ISEE limits you to 3 sittings per level.
• ISEE if your child tends to guess: No guessing penalty lowers the stakes on difficult questions.

Prep Strategy for Both

Both tests heavily reward vocabulary. Building a strong vocabulary through wide reading and explicit word study in the 6–12 months before testing produces the highest ROI. For math, both tests cover similar content: arithmetic, fractions, ratios, algebra basics, and geometry through the level-appropriate curriculum.

• Read broadly and at a challenging level — literary fiction, nonfiction, science, history
• Study vocabulary strategically using prefixes, roots, and suffixes (not just memorizing lists)
• Practice reading comprehension with full-length passages, not just summaries
• Do timed practice sections to build pacing — both tests have tight timing