If your child is applying to a selective private high school — in Texas or anywhere else — the ISEE Upper Level is almost certainly part of the process. Schools like Hockaday, St. Mark's, Episcopal School of Dallas, and Greenhill all require it. And unlike college admissions tests, the ISEE is used to directly compare applicants at every level of a school's incoming class. Not sure whether to choose the ISEE or SSAT? Our ISEE vs. SSAT guide walks through the decision framework.
That makes preparation matter enormously. At Victory Prep Tutors, we've helped thousands of students through the ISEE since 2014, and our ISEE students consistently average at or above the 95th percentile. This guide covers everything you need to know: the format, the scoring system, what each section actually tests, and how to build a prep plan that gets results.
Test Structure: What to Expect on Test Day
The ISEE Upper Level is administered by the ERB (Educational Records Bureau) and is designed for students applying to grades 9–12. The test contains five parts, but only four of them are scored by schools. Here's the full breakdown:
- Verbal Reasoning — 40 questions, 20 minutes
- Quantitative Reasoning — 37 questions, 35 minutes
- Reading Comprehension — 36 questions, 35 minutes
- Mathematics Achievement — 47 questions, 40 minutes
- Essay — 1 prompt, 30 minutes (unscored, but sent to schools)
Total testing time is approximately 2 hours and 40 minutes plus breaks. Students are not penalized for wrong answers — there's no guessing penalty — which has important strategic implications we'll cover below.
Because there's no wrong-answer penalty on the ISEE, students should answer every question — even if it means an educated guess on the hardest items. Leaving a question blank is always worse than taking a reasonable shot at it.
The ISEE is offered in three testing seasons per year: Fall (August–November), Winter (December–March), and Spring/Summer (April–July). Students may take the ISEE only once per testing season, which means most students get two attempts at most — making preparation all the more critical.
Verbal Reasoning: More Than Vocabulary
The Verbal Reasoning section trips up more students than almost any other part of the ISEE. It contains two question types:
- Synonyms (19 questions): Choose the word closest in meaning to the given word. These test breadth of vocabulary at an advanced level.
- Sentence Completions (21 questions): Fill in one or two blanks in a sentence using context clues. These test vocabulary in context, logical reasoning, and the ability to understand nuanced relationships between words.
The vocabulary on the ISEE Upper Level is genuinely challenging. Words like sycophant, ephemeral, perfidious, and laconic appear regularly. This isn't a section where cramming 50 words the week before the test works. Students who score in the 90th percentile and above have typically spent 3–6 months building vocabulary systematically — learning roots, prefixes, and suffixes alongside individual words so they can reason through unfamiliar terms.
Many students skip Sentence Completions when they feel stumped. This is a mistake. Even on hard items, you can often eliminate two or three choices using context clues alone — turning a random guess into a 50/50 or better. Always eliminate before guessing.
Quantitative Reasoning: Logic, Not Just Math
Quantitative Reasoning (QR) is often misunderstood. It is not the same as a math test. QR measures how well students can reason with numbers and quantities — think of it as a blend of math knowledge and logical problem-solving.
The section contains two question types:
- Word Problems (roughly 19 questions): Multi-step problems that require setting up and solving equations, often with a real-world context. The key is translating language into math efficiently.
- Quantitative Comparisons (roughly 15 questions): Students are given two quantities (Column A and Column B) and must determine which is greater, whether they're equal, or whether the relationship cannot be determined. These require fast, flexible thinking — not lengthy computation.
Quantitative Comparisons are unique to the ISEE (the SAT and ACT don't have them), and most students have never practiced this format before. Students who spend dedicated time on QC strategies — plugging in numbers, testing edge cases, recognizing when a comparison depends on an unknown — gain a significant edge over unprepared peers.
When a comparison contains a variable with no restrictions, always test at least three values: a positive number, a negative number, and zero. If the answer changes, the answer is "cannot be determined." This single rule eliminates the most common QC mistake.
Reading Comprehension: Speed and Precision
The Reading Comprehension section presents six passages ranging from literary fiction to history, science, and social studies. Students answer 36 questions in 35 minutes — meaning they have less than a minute per question, including reading time.
Question types include:
- Main idea — What is the passage primarily about?
- Supporting detail — Which fact from the passage best supports a given claim?
- Inference — What can be reasonably concluded based on the passage?
- Vocabulary in context — What does a particular word or phrase mean as used in the passage?
- Author's tone and purpose — Why did the author write this, and what is their attitude toward the subject?
Strong readers can move quickly through this section. Weaker readers — especially those who re-read heavily or get lost in long paragraphs — often run out of time before reaching the final passage. The fix isn't simply to read faster; it's to read actively, noting the main idea of each paragraph as you go so you can quickly locate evidence when answering questions.
Mathematics Achievement: Grade-Level Math Under Pressure
Mathematics Achievement (MA) is the most content-heavy section on the ISEE. With 47 questions in 40 minutes, students must move at a pace of just under a minute per question while covering a wide range of math topics:
- Arithmetic and number properties (fractions, decimals, percents, ratios)
- Algebra (expressions, equations, inequalities, functions)
- Geometry (angles, area, perimeter, circles, coordinate geometry)
- Data analysis and statistics
- Word problems requiring multi-step reasoning
Unlike QR, MA questions test math content directly. There are no "trick" question types — but there is significant breadth. Students who have gaps in any content area (a common issue for students who haven't yet completed Algebra 2) will lose points in predictable places.
"The students who score in the 90th percentile on ISEE math aren't necessarily the fastest — they're the most accurate. On a 47-question section with under a minute per question, careless errors are the single biggest score killer."
No calculator is permitted on either math section of the ISEE. This means mental math fluency matters — students should be comfortable with fraction operations, percent conversions, and basic algebraic manipulation without reaching for a calculator. For a full breakdown of section-specific math strategies, see our dedicated ISEE Math Strategies guide.
Our ISEE prep program gives students the content mastery, pacing skills, and test-day composure they need to reach the top stanines.
The Essay: Unscored but Unmissable
The ISEE essay is not scored by the ERB — but it is sent directly to the schools your child is applying to, and admission offices read it. Think of it as a writing sample that schools use to evaluate voice, clarity, and reasoning ability.
Students receive one of two prompt types:
- Creative prompt: Write a story based on a given opening line or scenario.
- Expository prompt: Share your opinion on a statement, explaining your reasoning with examples.
Students don't choose between types — the prompt they receive is predetermined. The essay is handwritten in 30 minutes. The best essays aren't the longest; they're organized, specific, and show a distinctive voice. Admissions officers are reading dozens of essays — a memorable opening sentence and clear structure go a long way.
Spend the first 3–4 minutes brainstorming and outlining before writing a single sentence. Students who plan first write more coherent essays even when time-pressured. Leave 2 minutes at the end to review for obvious errors.
Scoring & Stanines: How Schools Actually Use Your Scores
The ISEE uses a unique scoring system that's different from the SAT or ACT, and understanding it is essential for setting realistic goals.
Raw scores are first converted to scaled scores ranging from 760 to 940 for each of the four sections. But schools primarily look at two other numbers:
- Percentile rank: How a student performed compared to other ISEE test-takers in the same grade level over the past three years. A 75th percentile means your child scored higher than 75% of students who took the test.
- Stanine: A score from 1 to 9 that groups percentile ranges into nine bands. Stanine 5 is average (40th–59th percentile). Stanines 7–9 represent the 77th percentile and above.
| Stanine | Percentile Range | What It Means |
|---|---|---|
| 9 | 96th–99th | Exceptional |
| 8 | 89th–95th | Above average |
| 7 | 77th–88th | Competitive for many schools |
| 5–6 | 40th–76th | Average range |
| 1–4 | Below 40th | Below average |
Most highly selective private schools expect applicants to have stanines of 7 or higher across all four sections — with 8s and 9s in core areas preferred. Because the ISEE is normed against a pool of highly motivated, academically strong students who are all applying to private schools, the competition is intense. Scoring in the 90th percentile on the ISEE is meaningfully harder than scoring in the 90th percentile on a general population test.
The ISEE is normed against other students applying to private schools — not the general student population. This means the comparison group is already academically strong. A stanine of 5 on the ISEE is not the same as being "average" in a student's school — it means average compared to other private school applicants. Set score goals accordingly.
Preparation Timeline: When to Start and How to Structure It
Based on our experience with thousands of ISEE students, we recommend the following timeline:
6+ Months Before the Test: Diagnostic and Foundation Building
Start with a full-length diagnostic test under timed conditions. Identify the sections and specific content areas where your child is weakest. In this phase, focus on closing content gaps — particularly in math — and begin systematic vocabulary building. Two to three hours per week is appropriate at this stage.
3–4 Months Before: Targeted Practice
Shift to active test prep. Work through targeted practice sets for each section, focusing on question types your child finds most challenging (often Quantitative Comparisons and vocabulary-heavy Sentence Completions). Take a full practice test monthly to track progress. Four to six hours per week.
4–6 Weeks Before: Simulation and Stamina
In the final stretch, prioritize full-length, timed practice tests under realistic conditions — at the same time of day as the actual test. Review every mistake carefully. Address test anxiety and develop a plan for managing time within each section. This is also the time to practice the essay prompt types under timed conditions.
Students who start ISEE prep 4–6 months before their test date and study consistently — 5–7 hours per week — see the strongest stanine improvements. Earlier than 6 months and students often plateau; later than 3 months and there isn't enough time to build vocabulary and math foundations. Start with a diagnostic, then build a plan around your child's actual weak spots.
The VPT Approach: What Actually Gets Students to the 90th Percentile
Since 2014, Victory Prep Tutors has guided more than 11,000 students through standardized test prep. Our ISEE students consistently score at or above the 95th percentile — and it's not because we have magic tricks. It's because we approach prep strategically and systematically.
Here's what separates high-scoring ISEE students from the rest:
- Vocabulary depth, not just breadth. Memorizing 500 words isn't the same as understanding how words work. We teach roots, prefixes, and suffixes so students can reason through words they've never seen. On a test with hundreds of rare words, this is the difference between a stanine 6 and a stanine 8 on Verbal.
- QC mastery as a standalone skill. Quantitative Comparison questions require their own strategy set. Students who treat them like regular math problems waste time and make systematic errors. We dedicate focused sessions specifically to QC technique.
- Error analysis, not just more practice. Doing 100 problems incorrectly doesn't help. We build habits of reviewing every mistake — understanding why the wrong answer was wrong, not just what the right answer is. This is what actually drives improvement between practice tests.
- Pacing plans tailored to the student. Some students are fast and careless; others are careful but run out of time. Our tutors build customized pacing strategies for each section based on each student's specific tendencies.
- Simulated test conditions. The stress of a 2-hour, 40-minute test is itself a skill to manage. We run full practice tests in realistic conditions well before test day so students arrive confident and composed.
The ISEE is a demanding test designed to differentiate among already strong students. Reaching the 90th percentile requires real preparation — but it's absolutely achievable with the right approach and the right timeline. Year after year, our students go on to earn admission to Hockaday, St. Mark's, Greenhill, Ursuline, Jesuit, and highly selective programs in Houston and Austin. If your child is applying at the middle school level instead, our ISEE Middle Level Guide covers the specific strategies for that test. If you're ready to build a personalized ISEE plan for your child, our team is here to help.
Ready to help your child reach the 90th percentile on the Upper Level ISEE? Our tutors have guided students to stanine 8 and 9 scores at Hockaday, St. Mark’s, Greenhill, and ESD — and we’d love to build a plan for your family.
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