ISEE Middle Level common mistakes
ISEE Middle Level · Understand the traps and how to avoid them.
On synonym questions, choosing the answer that merely sounds sophisticated or is thematically related to the prompt word, e.g. picking 'verbose' for 'loquacious' without confirming both mean talkative rather than 'wordy about anything'.
The ISEE Verbal Reasoning synonym section rewards precise meaning, and students often recognize the prompt word only vaguely. Under time pressure they match on tone or topic rather than exact definition, and hard-looking distractors feel 'more correct.'
What to do instead
Before looking at the options, write a one- or two-word definition of the prompt word. Eliminate any choice that does not fit that definition, even if it sounds impressive. For each remaining pair, substitute both into a short sentence and check whether the meaning survives. Practice with a list of high-frequency ISEE synonym families (e.g., terse/brief, candid/frank, obscure/unclear) and drill the differences among near-synonyms.
On sentence completion, reading only the blank's immediate clause and ignoring the transition words and the logic of the second half of the sentence, so a choice that fits locally but reverses the sentence's contrast is selected.
Students read quickly and latch onto a single keyword, treating the sentence as a vocabulary test rather than a logic puzzle. Words like 'although,' 'despite,' and 'therefore' are skimmed over.
What to do instead
Cover the answer choices and read the whole sentence twice. Mark the signal word (contrast: although, yet, despite; cause: because, thus; addition: moreover) and decide whether the blank must agree or oppose the other half. Predict a word in your own language before seeing the options, then choose the closest match. If two choices both fit, the sentence's tone or register usually breaks the tie.
On quantitative comparison questions, computing both quantities fully and then choosing the larger without first checking whether the relationship depends on the value of a variable, so 'cannot be determined' is almost never selected.
Students are trained to calculate, and 'cannot be determined' feels like a non-answer. They test one convenient value of x, find a definite inequality, and stop, missing that a different value reverses it.
What to do instead
Treat quantitative comparison as a logic question: simplify each column, then deliberately test three cases for any variable - a positive number greater than 1, a fraction between 0 and 1, and a negative number (plus zero if allowed). If the comparison flips, the answer is 'cannot be determined.' Also check whether the centered information (e.g., x > 0) already restricts the cases, which can make a definite answer correct.
On word problems, setting up an equation from the numbers in the order they appear in the text rather than from the relationship described, producing answers that are plausible but inverted (e.g., computing the discount amount when the final price is asked).
Students translate phrase by phrase and lose track of what the question actually asks. Multi-step percent, rate, and ratio problems in the Quantitative Reasoning section are designed to punish this.
What to do instead
After reading, restate the question in one sentence ending in a question mark and underline the requested quantity. Assign a variable to the unknown and write 'Let x = ...' explicitly. Estimate a rough answer first (e.g., a 20% discount on $50 must be near $40), then check the computed result against the estimate. If the result is far off, the setup, not the arithmetic, is wrong.
On reading comprehension, answering from prior knowledge or personal opinion about the topic instead of from what the passage states, and choosing an option that is true in the real world but unsupported by the text.
The passages are often about science, history, or social issues students already know something about, and the brain fills gaps. Answer choices are deliberately written to sound reasonable and familiar.
What to do instead
For every answer, point to the line or sentence in the passage that supports it. If you cannot locate support, eliminate it. Distinguish 'stated,' 'suggested,' and 'not addressed' by tagging each option. For inference questions, the correct answer must be a small, defensible step from the text, not a leap.
On main-idea and author's-purpose questions, selecting a choice that is true but too narrow (one detail from one paragraph) or too broad (a theme the passage only touches), instead of the scope that covers the whole passage.
Students remember the most vivid or first paragraph and mistake it for the whole. They also equate length or generality with correctness.
What to do instead
After reading, write a one-line summary of the entire passage in your own words before looking at the choices. Then test each option against that summary: does it cover the beginning, middle, and end? Eliminate choices that describe only one paragraph or that go beyond the passage's argument. Pay attention to the first and last sentences, which usually frame the scope.
In Mathematics Achievement, rushing through multi-step arithmetic and misaligning decimals or mishandling negative signs and fraction operations, then selecting an answer choice that matches the error.
The section is timed and calculator-free, so students prioritize speed. Distractors are built from common slips, so a wrong computation often lands on an offered answer, creating false confidence.
What to do instead
Show work on paper for every problem, keeping decimal points aligned and writing negative signs clearly. For fractions, always find a common denominator explicitly. Do a quick reverse check (multiply back, or substitute the answer) on equations. Budget time so the last few problems are not rushed; guessing on one hard item is cheaper than a systematic arithmetic slip.
In Mathematics Achievement, misreading geometry and measurement questions by using the diameter where the radius is needed, confusing area and perimeter formulas, or forgetting unit conversions before computing.
Formulas are memorized as strings without attention to what each variable represents, and mixed units (inches and feet, minutes and hours) are overlooked during setup.
What to do instead
Write the formula and label each quantity before substituting (r = 5, not d = 5). Convert all units to one system at the start and state the conversion. Sanity-check the magnitude: a perimeter in the hundreds for a small shape signals a formula mix-up. Keep a one-page formula sheet and review it weekly.
On the essay, writing a narrative or a summary of the prompt topic instead of taking a clear position and defending it with specific reasons and examples.
The prompt is often a broad question about a choice or issue, and students default to storytelling or restating both sides. They also run out of time because they plan while writing.
What to do instead
Spend the first three to four minutes outlining: a thesis that takes one side, two or three reasons, and a concrete example for each. Use a simple structure - introduction with thesis, one paragraph per reason, brief acknowledgment of the other side, conclusion. Write the thesis before anything else and check every paragraph against it. Practice timed 30-minute essays on opinion prompts to build pacing.
Managing time poorly across sections: spending too long on early synonym or reading questions and then rushing the end, or leaving blanks on items where a wrong answer costs nothing.
Students treat every question as equally important and refuse to move on without certainty. They also do not know the scoring rules, so they leave answers blank out of fear of guessing.
What to do instead
Learn the section timing in advance and set checkpoints (e.g., halfway through the questions at the halfway mark of the time). On a hard item, eliminate what you can, mark a best guess, and move on; return only if time remains. Since there is no penalty for wrong answers on the multiple-choice sections, never leave a bubble empty. Take at least two full-length timed practice tests to calibrate pacing.