Digital SAT Reading & Writing: Free Diagnostic & Study Guide
The full Digital SAT Reading & Writing section: Craft & Structure, Information & Ideas, Standard English Conventions, and Expression of Ideas.
Instead of a single score, this free adaptive diagnostic maps your performance across every Digital SAT Reading & Writing micro-topic and returns a color-coded Weakness Index — so you know exactly which concepts to study next. It's 20 questions, adapts to your level, and needs no sign-up.
Domains covered
Craft & Structure
Vocabulary in context, the purpose and structure of texts, and connections across paired texts.
3 micro-topics →Information & Ideas
Central ideas, supporting evidence (textual and quantitative), and logical inferences.
3 micro-topics →Standard English Conventions
Sentence boundaries, punctuation, and the structure and sense of sentences.
2 micro-topics →Expression of Ideas
Combining information effectively and using transitions to connect ideas.
2 micro-topics →Advertisement
Every Digital SAT Reading & Writing micro-topic we diagnose
Your report scores each of these 10 skills separately, using difficulty-weighted accuracy and a confidence level, so weak spots can't hide inside an overall score.
- Words in Context
- Text Structure & Purpose
- Cross-Text Connections
- Central Ideas & Details
- Command of Evidence
- Inferences
- Boundaries
- Form, Structure & Sense
- Rhetorical Synthesis
- Transitions
How the diagnostic works
- Adaptive questions: get one right and the next is harder; miss it and the next is easier — so we find your true level fast.
- Difficulty-weighted scoring: harder questions count for more, giving a fairer picture than raw percent-correct.
- Weakness Index: a Red/Green breakdown by micro-topic, plus a careless-slip vs concept-gap split and a worked explanation for every question.
Frequently asked questions
Is the Digital SAT Reading & Writing diagnostic free?
Yes. The Digital SAT Reading & Writing diagnostic and its Weakness Index report are completely free, with no sign-up or credit card required.
How many questions is the Digital SAT Reading & Writing diagnostic?
A full Digital SAT Reading & Writing diagnostic is about 20 adaptive questions covering all 10 micro-topics, and takes roughly 25–35 minutes.
Are the questions official SAT questions?
No. All questions are original and AI-generated in the style of the Digital SAT. They follow the official domain structure but do not reproduce College Board questions.
Ready to find your Digital SAT Reading & Writing gaps?
All questions are original and AI-generated. SAT® is a trademark of the College Board, which does not endorse this site.