Most lost points on the ACT don't come from not knowing the material -- they come from a handful of recurring, avoidable mistakes. Here are six of the most common ones, and how to fix each one before test day.
1. Not reviewing your own answer choices for wrong-answer patterns
After a practice test, most students look only at which questions they missed. It's far more useful to look at WHY -- did you consistently pick the answer that was almost right but not quite? Did you run out of time on the same section every time? Reviewing your own error patterns, not just your raw score, is what actually drives improvement between practice tests.
Related: What to Expect on the ACT: Format, Scoring, and How to Prepare
2. Treating every section with the same pacing strategy
English and Math questions are worth roughly the same amount of time each, but Reading passages front-load your time investment into reading before any questions can be answered at all. Applying one universal "spend X seconds per question" rule across every section ignores this, and it's a common reason students run out of time on Reading specifically while finishing English and Math with time to spare.
3. Avoiding "NO CHANGE" on English out of instinct
Some students develop a subconscious bias against selecting "NO CHANGE" on the English section, as if picking it means they didn't do enough work. In reality, it's a real, frequently correct answer choice. If you've read a sentence carefully and genuinely can't find an error, trust that assessment rather than second-guessing yourself into an unnecessary edit.
4. Skipping the optional Science section prep entirely, then taking it anyway
If your target schools ask for a Science score, don't wait until the week before your test date to start practicing it. The Science section rewards a specific skill -- reading graphs, tables, and experimental setups quickly -- that most students haven't practiced recently, even if they're strong in actual science coursework. Decide early whether you're taking Science, and if so, budget real prep time for it specifically.
5. Not using full-length, timed practice tests until close to test day
Reviewing content in isolated chunks feels productive, but it doesn't build the pacing stamina the real test demands. Full-length, realistically timed practice tests -- ideally more than one, spaced out over your prep timeline -- are what actually reveal whether your pacing strategy holds up under real test-day conditions, not just in short bursts of untimed review.
6. Forgetting that retakes are unlimited and superscoring is common
There's no cap on how many times you can take the ACT, and many colleges will superscore your best individual section results across every test date. Treating a single test date as your only shot adds unnecessary pressure -- and can lead to worse performance -- when the reality is that most students who retest see real improvement, and many schools will only ever see your best combined result anyway.