The ISEE Test: Levels, Sections, Length and Scoring Explained

What the ISEE is and who runs it

This section explains what kind of test the ISEE is, who administers it and how schools treat the results.

Independent schools in the United States are privately governed, nonprofit schools. Because applicants come from many school systems with different grading standards, many of these schools ask for a common standardized score. The ISEE is one of the most widely used admission tests for that purpose. Schools treat the result as one input among several, next to transcripts, recommendations, an application essay and an interview, so the test is part of an application and not the whole of it.

The ISEE is administered by E3n (formerly ERB), a nonprofit organization. In March 2026 ERB, which ran the ISEE, merged with the Enrollment Management Association, which ran the SSAT, to form E3n. The two tests remain separate, and each school decides which tests it accepts. The older domain erblearn.org now redirects to admission.org, but printed guides and older web pages may still use the former name.

Item	Detail
Full name	Independent School Entrance Exam
Administrator	E3n (formerly ERB), a nonprofit organization
Website	admission.org
Applicant grades	Grades 2–12
Schools accepting results	More than 1,200 worldwide

Source: E3n, ISEE overview (admission.org), checked 2026-08-24.

Which level a student takes

This section explains how the six levels map to grades, which is the step where families most often make an error.

The ISEE is organized into four levels: Primary, Lower, Middle and Upper. The Primary level has three versions, so there are six entry points in all. Each student takes the level that matches the grade the student is applying to enter. A student currently in grade 5 who is applying to grade 6 therefore takes the Lower Level, and a student currently in grade 8 who is applying to grade 9 takes the Upper Level. The registration system assigns the level, and students cannot choose a lower level in order to compare more favorably.

Level	Applying to	Usually in	Structure
Primary 2	Grade 2	Grade 1	Auditory Comprehension, Reading, Mathematics
Primary 3	Grade 3	Grade 2	Reading, Mathematics
Primary 4	Grade 4	Grade 3	Reading, Mathematics
Lower Level	Grades 5–6	Grades 4–5	Four scored sections plus an unscored essay
Middle Level	Grades 7–8	Grades 6–7	Four scored sections plus an unscored essay
Upper Level	Grades 9–12	Grades 8–11	Four scored sections plus an unscored essay

Source: E3n, ISEE overview (admission.org), checked 2026-08-24.

A complete level-by-level comparison, including the most common mistakes in choosing a level, is on the ISEE levels page.

How long the test is and what it contains

This section answers how many questions and how many minutes each level involves. The scored portion is the same four sections at the Lower, Middle and Upper Levels, taken in a fixed order, with the essay last.

Section	Lower Level	Middle and Upper Level
Verbal Reasoning	34 questions, 20 minutes	40 questions, 20 minutes
Quantitative Reasoning	38 questions, 35 minutes	37 questions, 35 minutes
Reading Comprehension	25 questions, 25 minutes	36 questions, 35 minutes
Mathematics Achievement	30 questions, 30 minutes	47 questions, 40 minutes
Four scored sections combined	127 questions, 110 minutes	160 questions, 130 minutes
Essay (unscored)	1 prompt, 30 minutes	1 prompt, 30 minutes

Source: E3n, ISEE overview (admission.org), checked 2026-08-24.

Adding the essay, the working time is 140 minutes at the Lower Level and 160 minutes at the Middle and Upper Levels, before breaks. Check-in, instructions and breaks lengthen the visit, so a family should plan for most of a morning or afternoon, and the exact schedule is shown in the registration account for the chosen date. The Middle and Upper Levels have identical question counts and timing. What differs is the difficulty and the comparison group, because percentile ranks are calculated within the applicant’s own entry grade.

The three Primary levels are shorter and have no essay. Primary 2 includes an Auditory Comprehension section in which the questions are read aloud, because independent reading is not yet reliable at that age. Section-level question counts and minutes for the Primary levels are not listed on admission.org, so none are given here. Families of Primary applicants should confirm timing in the registration account.

What each section measures

This section describes the four scored sections so that families can see what the numbers in the table above represent.

Verbal Reasoning tests vocabulary and the ability to distinguish shades of meaning. Students choose the word closest in meaning to a given word, and they complete sentences with the most fitting word or phrase. For students who speak another language at home, this is usually the section that needs the longest preparation, because vocabulary grows slowly.

Quantitative Reasoning tests mathematical thinking rather than the amount of mathematics a student has learned. Many items ask students to compare quantities, estimate, find a pattern or interpret data, and few require long calculation.

Reading Comprehension asks students to read passages and answer questions on the main idea, supporting detail, inference, word meaning in context, organization and tone.

Mathematics Achievement tests mathematics that students are expected to have learned: number and operations, algebra, geometry, measurement, and data and probability. It requires actual calculation and familiarity with English mathematical terms. Quantitative Reasoning and Mathematics Achievement are easy to confuse. The first rewards flexible thinking about quantity, and the second rewards accurate knowledge of content.

The ISEE counts only correct answers, and there is no penalty for a wrong answer. Students are therefore encouraged to answer every question, including those they must guess, before time runs out.

The essay

This section explains why an unscored essay still deserves preparation. At the Lower, Middle and Upper Levels, students write one essay in response to a prompt given on test day. It does not receive a score and does not appear in the report that the family receives. To protect the prompts, families cannot obtain a copy. The schools that the family selects to receive scores do receive the essay, and admission staff read it to see how the student organizes ideas and writes under time limits. A blank, off-topic or hurried essay can leave a weaker impression than a slightly lower stanine. The Primary levels have no essay.

Scores in brief

This section gives the minimum needed to read a score report; the full explanation is on the scores page. Each of the scored sections receives three numbers, and no total is given.

Measure	Range	Meaning
Scaled score	760–940	Number of correct answers converted to a common scale
Percentile rank	1–99	Share of same-grade test takers whose scores the student equaled or exceeded
Stanine	1–9	Nine bands of percentile ranks, with 9 the highest

Source: E3n, ISEE score reports (admission.org), checked 2026-08-24.

Results are usually released within 3 to 5 days for tests taken on a computer and within 5 to 10 days for paper tests. They are posted to the family account and can be sent to the schools the family selects. Schools usually look at the percentile rank and stanine of each section, and a percentile rank describes position among applicants of the same grade, not the share of questions answered correctly.

Testing seasons and the number of attempts

This section explains how often a student can test. A student may take the ISEE once in each testing season and at most three times in a school year. A student who tests in the fall season must wait until the winter season at the earliest to test again.

Season	Commonly	In practice
Fall	August to November	Main season for first attempts in the application year
Winter	December to March	Last window before many deadlines; common for a second attempt
Spring/Summer	April to July	Useful for early experience before the next application year

Source: E3n, ISEE overview (admission.org), checked 2026-08-24. The once-per-season rule is stated by E3n. The month ranges are the commonly used boundaries and are not listed season by season on admission.org, so the dates displayed in the registration account control.

The rule has a practical consequence. A first attempt scheduled just before a deadline leaves no later season in which to retest. Planning backward from each school’s deadline, as described on the test dates page, helps avoid that situation.

Whether a student needs the ISEE

This section sets out the order of decisions. Whether a student must take the ISEE depends on the schools the family has chosen, not on the student’s grades.

1. List the target schools and the grade the student is applying to enter at each.
2. Read each school’s admission page to learn whether it requires the ISEE, accepts either the ISEE or the SSAT, requires another test, or uses its own assessment.
3. If the ISEE is needed, confirm the level from the application grade.
4. Choose a testing season by working backward from the earliest deadline.

Families comparing the ISEE with the SSAT can use the guide to choosing between the ISEE and the SSAT. The practical steps of signing up, including the four test formats, are on the registration page. Families who would like a written view of the gap between a student’s current level and the target can request a free consultation.