ACT Unit Tests
Pick a unit to drill it head-on. Each unit has 4 different test variations so you can keep retaking until you master it.
ACT English
Punctuation, grammar and usage, sentence structure, and rhetorical skills.
12 questions · ~18 min
ACT Math
Pre-algebra, elementary and intermediate algebra, coordinate and plane geometry, trigonometry.
12 questions · ~18 min
ACT Reading
Main ideas, passage types, reading strategy, and science-style passages.
12 questions · ~18 min
ACT Science
Data representation, research summaries, and conflicting viewpoints.
12 questions · ~18 min
How unit tests work
- Focused on a single AP unit, between a single-topic quiz and the full diagnostic.
- 4 variations per unit — pick a fresh variation any time you retake.
- Roughly 90 seconds per question — the same pacing as the AP exam.
- You'll get a unit-level score, recommended topics to review, and a question-by-question explanation.
About the ACT exam
The ACT is a national college admissions test, accepted alongside the SAT by essentially all U.S. four-year colleges, that was restructured beginning in 2025 into an 'enhanced' format. The core exam now covers three required sections: English, Math, and Reading. English tests grammar, usage, punctuation, sentence structure, and rhetorical skills across passages; Math spans pre-algebra through algebra II, geometry, and a small amount of trigonometry, and now offers four answer choices per question rather than five; Reading measures comprehension and inference across prose, social science, humanities, and natural science passages. The headline change is that the Science section is now optional: it no longer counts toward the composite and instead yields a standalone Science score plus a STEM score that averages Math and Science. An optional Writing (essay) section remains available for schools that want it. The enhanced test is shorter than the legacy version and gives students noticeably more time per question, with shorter English and Reading passages and tighter, less word-heavy Math problems. The composite is the rounded average of English, Math, and Reading only. Students commonly stumble on ACT pacing, which is brisker than the SAT despite the added time, and on the Reading section's volume of detail under time pressure. Others lose points by neglecting the now-optional Science section when their target programs recommend it, or by misjudging whether to add Writing. Preparation should focus on official ACT practice in the enhanced format, grammar rules for English, and timing drills, since speed and accuracy together drive the composite.
Exam structure
Three required sections — English, Math, Reading — with optional Science and optional Writing. Core testing runs about 125 minutes; opting into Science adds roughly 40 minutes and Writing adds about 40 minutes.
Scoring
English, Math, and Reading are each scored 1-36 and averaged (rounded) into the 1-36 composite; optional Science yields a separate 1-36 score and a STEM score, and Writing is reported separately.
Common mistakes
- Skipping the optional Science section when target colleges or STEM/scholarship programs still recommend or require it.
- Assuming Science counts toward the composite — under the enhanced format it does not; only English, Math, and Reading do.
- Mismanaging Reading pacing, where the volume of detail across passages punishes slow readers despite the added time per question.
- Overlooking high-frequency English grammar rules (punctuation, transitions, sentence structure) that dominate the section.
- Forgetting that Math now has four answer choices, so old five-choice elimination habits and aggressive guessing strategies shift.