SAT grammar practice means drilling one specific thing: the Standard English Conventions questions inside the Digital SAT's Reading and Writing section. There is no separate grammar section and no essay, but conventions questions make up roughly 26% of the Reading and Writing section, which works out to about 11 to 15 scored questions on every test you sit.
It is also the most learnable part of the exam: conventions questions test a finite list of rules, not your reading speed or vocabulary. Below are nine original practice questions in the real Digital SAT format, each with the answer and the rule behind it. For the rules explained in depth, read our complete guide to Digital SAT grammar rules first.
What SAT Grammar Practice Actually Covers
Grammar does not get its own section. It lives inside Reading and Writing as one of four content domains, alongside Craft and Structure, Information and Ideas, and Expression of Ideas. College Board defines the Standard English Conventions domain on the Reading and Writing section as measuring your ability to edit text to conform to core conventions of Standard English sentence structure, usage, and punctuation.
The whole SAT is 98 questions in 2 hours 14 minutes. Reading and Writing is 54 questions across two 32-minute modules; Math is 44 questions across two 35-minute modules. Both sections are adaptive at the module level, so how you perform on module 1 determines whether module 2 serves you a harder or easier set.
Every Reading and Writing question follows the same shape: a short passage, or passage pair, of roughly 25 to 150 words, then a single multiple-choice question. Conventions passages contain a blank, and you pick the option that is correct, not the one that sounds smoothest. They arrive as a block in each module, after the Craft and Structure and Information and Ideas questions, running easiest to hardest regardless of rule. Our overview of the SAT writing section covers how the domains fit together.
The Rule Families Worth Drilling First
College Board groups Standard English Conventions into two testing points: Boundaries, and Form, Structure, and Sense. Almost everything falls into one of the families below; the depth lives in the rules guide.
| Rule family | Testing point | What you have to decide |
|---|
| Sentence boundaries | Boundaries | Whether both halves are complete sentences, and so need a period, semicolon, or comma plus and/but/so |
| Punctuation inside a sentence | Boundaries | Paired commas or dashes around extra information, colons before a list, and never splitting a subject from its verb with a single mark |
| Subject-verb agreement | Form, Structure, and Sense | What the real subject is once you strip out the phrases between it and the verb |
| Pronouns and possessives | Form, Structure, and Sense | Whether the antecedent is singular or plural, plus its/it's, their/there/they're, and apostrophe placement |
| Verb tense and form | Form, Structure, and Sense | Which tense the surrounding sentences and date markers establish |
| Modifiers and parallelism | Form, Structure, and Sense | Whether the opening phrase describes the noun after the comma, and whether list items match in form |
With only a week, drill the first two rows: the fix is mechanical.
9 SAT Grammar Practice Questions With Explanations
Each uses the real prompt: "Which choice completes the text so that it conforms to the conventions of Standard English?" Cover the answers, work through all nine, then read every explanation, including the ones you got right.
1. Sentence boundaries. Chemist Tu Youyou and her team screened more than 2,000 traditional herbal preparations for malaria remedies. A fourth-century handbook called for soaking sweet wormwood in water rather than boiling ______ that detail convinced her to extract the active compound at a low temperature.
- A) it,
- B) it;
- C) it
- D) it and
Answer: B. Both halves are complete sentences, so they need a semicolon or a period. A comma alone creates a comma splice, no punctuation creates a run-on, and "and" would need a comma before it.
2. Subject-verb agreement. The collection of letters, diaries, and shipping manifests donated to the museum last spring ______ researchers a detailed picture of trade along the Gulf Coast in the 1840s.
- A) give
- B) have given
- C) gives
- D) are giving
Answer: C. The subject is "collection," which is singular; everything from "of letters" onward is a modifier. Strip it out and you get "The collection gives." The other three verbs are plural, traps set by the nearby plural nouns.
3. Pronoun agreement. Each of the three research teams submitted ______ findings to the review board before the deadline.
- A) its
- B) their
- C) it's
- D) they're
Answer: A. "Each" is the subject here, and it is singular no matter how many teams follow it, so the possessive pronoun must be singular too. "It's" and "they're" are contractions of "it is" and "they are," which cannot own anything.
4. Colons. Bauhaus designers favored materials suited to factory ______ tubular steel, plywood, and glass.
- A) production,
- B) production;
- C) production
- D) production:
Answer: D. A colon introduces a list after a complete sentence, and "Bauhaus designers favored materials suited to factory production" is complete. A semicolon would need a second complete sentence after it; a comma would blur the sentence into the list; no punctuation would run the two straight together.
5. Verb tense. Botanist Ynes Mexia made her first plant-collecting expedition in 1925, at the age of fifty-five. Over the next thirteen years she ______ more than 145,000 specimens across the Americas.
- A) collects
- B) collected
- C) has collected
- D) will have collected
Answer: B. The date and the first sentence lock the passage into the simple past. Present, present perfect, and future perfect all conflict with a finished stretch of time.
6. Modifier placement. Working from a single photograph taken in 1911, ______
- A) conservators at the museum reconstructed the missing panel.
- B) the missing panel was reconstructed by conservators at the museum.
- C) the museum's reconstruction of the missing panel took nearly a year.
- D) it took conservators at the museum nearly a year to reconstruct the panel.
Answer: A. An opening phrase like "Working from..." must describe the noun right after the comma. Only conservators can do the working; a panel, a reconstruction, and "it" cannot.
7. Possessives. The observatory operates two telescopes. The larger one tracks distant galaxies, while the smaller one monitors the ______ surface for flares.
- A) suns
- B) suns'
- C) sun's
- D) sun
Answer: C. The surface belongs to one sun, so use the singular possessive, apostrophe before the s. "Suns" is a plural that owns nothing, "suns'" would mean several suns share the surface, and plain "sun" leaves the possessive unmarked.
8. Supplementary elements. The Antikythera mechanism ______ was recovered from a Greek shipwreck in the early 1900s, is often described as the earliest known analog computer.
- A) which
- B) that
- C) , which
- D) , that
Answer: C. A comma already closes the extra information before "is often described," so you need a matching comma to open it. Punctuation around a supplement comes in pairs, and "that" cannot introduce a comma-bracketed clause.
9. Unnecessary punctuation. The team of engineers that designed the bridge's suspension ______ won an international award for the project.
- A) cables,
- B) cables;
- C) cables:
- D) cables
Answer: D. The complete subject runs all the way to "cables," and its verb is "won." A single punctuation mark cannot stand between a subject and its verb, so the right choice has none at all. This is the trap when a subject gets long.
Score yourself by rule family, not by total: six of nine with two boundaries misses tells you what to study next. For more in this format, try our practice SAT questions or the SAT question bank.
A Drilling Method That Makes SAT Grammar Practice Stick
Conventions questions reward volume: the rule list is short, and repetition turns a rule you know into one you apply under pressure.
Do short sets, not marathons. Ten to fifteen questions at a time surfaces a pattern without exhausting you. Four short sets across a week beat one long session.
Read the explanation on every miss. The goal is to name the rule, not just recognize the right answer. If you cannot say "that was a comma splice," you will miss it again in a different costume.
Log misses by rule family, then re-drill the worst one. Write the family name and nothing else. After thirty or forty questions, two or three families usually account for most of your misses. Go back to the grammar rules guide, then do a focused set on that family alone.
Use the free official sources too. College Board's Bluebook practice tests are the only place to sit a full official test inside the real testing app, and Khan Academy's official practice covers every skill at three levels, Foundations, Medium, and Advanced, free and built in partnership with College Board. Use Bluebook for full-length rehearsal and Khan Academy for skill-level drilling between tests.
That is where Larry Learns fits: an interactive app rather than a worksheet, with daily practice across every section, AI explanations on your misses, and a free tier of three quizzes and three explanations a day. You can drill grammar on its own or mix it with the rest of Reading and Writing. Our SAT prep schedule template shows how to slot short daily sets into a longer study block.
Frequently Asked Questions About SAT Grammar Practice
How many grammar questions are on the Digital SAT?
Standard English Conventions accounts for roughly 26% of the Reading and Writing section, which College Board's test specifications put at 11 to 15 scored questions per test. Reading and Writing has 54 questions in total, split across two 32-minute modules.
Is there a separate grammar section on the SAT?
No. Grammar is one of four content domains inside Reading and Writing, not a section of its own, and there is no essay on the Digital SAT. The full test is 98 questions in 2 hours 14 minutes across two sections.
What is the fastest way to improve on SAT grammar?
Drill sentence boundaries and punctuation first. The decision is mechanical: check whether each side of the blank could stand alone as a sentence, then pick punctuation that matches.
Should I trust what sounds right on SAT grammar questions?
Not on the harder ones. Wrong answers are often built to sound natural, especially comma splices. Test the rule instead of your ear; when two choices both sound fine, the question is usually about punctuation pairing or agreement.
Do the grammar questions get harder in the second module?
They can. Both SAT sections are adaptive at the module level, so module 1 determines whether module 2 is the harder or easier version. Within any module, conventions questions run easiest to hardest regardless of rule. Our explainer on adaptive testing covers how this affects your score.
Where can I find free SAT grammar practice?
Start with College Board's Bluebook app for full-length official tests and Khan Academy's Official Digital SAT Prep for skill-level drilling, both free. Add daily short sets so you practice between full tests, not only on simulation days.
The nine questions above are a diagnostic, not a study plan. Once you know which family costs you the most, the fix is repetition until the decision becomes automatic. Start a free practice set at Larry's practice quiz, or create a free account to see which skills you are weakest in.
