The four ACT sections, all in one place.
The ACT is a four-section, 215-question test scored from 1–36. Each section below has its own subtopic drills, graded difficulty levels, and worked answer explanations. Pick where you're weakest and start there.

English
Grammar, punctuation, sentence structure, and rhetorical skills across five short passages.

Math
Sixty problems spanning pre-algebra through trigonometry, in order of increasing difficulty.

Reading
Four passages, ten questions each, across fiction, social science, humanities, and natural science.

Science
Six or seven passages of data tables, experiments, and conflicting viewpoints — interpretation, not memorization.
How to use ACT Vault
Each section page lists its subtopics. Each subtopic links to easy, medium, and hard drill sets. Each drill set is a real, fully built page of practice questions with worked answer explanations and study tips. There are no placeholder pages on this site — every link goes somewhere real.
If you have a few weeks before your test, the highest-leverage approach is: take a full-length practice test, find your weakest section, work through that section's hardest subtopic drills, then re-take the test. If you have a few months, do the same loop but spread it out so you can build durable understanding instead of cramming.
The ACT rewards three things in roughly equal measure: knowing the underlying content, recognizing question patterns, and managing time. Drills here help with all three — pattern recognition especially benefits from seeing many slight variants of the same question type.
What's not on this site
You won't find official, copyrighted ACT questions here — those belong to ACT, Inc. Every question on ACT Vault is original, written in the same style and difficulty range as the real exam. We've also avoided the common test-prep trap of giving you a single mock test in a thousand-page PDF; instead, the content is broken into short, page-sized drills you can knock out between classes.