Standard English Conventions is 26% of SAT R&W — approximately 7–9 questions per module. The question stem is always the same: "Which choice completes the text so that it conforms to the conventions of Standard English?"
You are never asked to NAME a grammar rule. You just pick the correct version.
The SAT tests three errors:
| Error | What It Is | Example |
|---|---|---|
| Fragment | Incomplete sentence (no independent clause) | "Although the experiment succeeded." |
| Run-on | Two independent clauses joined without punctuation | "The data was compelling the team published it." |
| Comma splice | Two independent clauses joined with only a comma | "The data was compelling, the team published it." |
| Fix | Example |
|---|---|
| Period | "The data was compelling. The team published it." |
| Semicolon | "The data was compelling; the team published it." |
| Comma + coordinating conjunction | "The data was compelling, and the team published it." |
| Subordination | "Because the data was compelling, the team published it." |
SAT Pattern: The test gives you a passage with a blank and four choices — one is a fragment, one is a run-on, one is a comma splice, and one is correct.
The subject and verb must agree in number. The SAT makes this hard by inserting phrases between them.
Example: "The collection of rare minerals _____ displayed in the main hall."
The subject is "collection" (singular), not "minerals." Correct verb: "is" displayed.
Common traps:
Pronouns must match their antecedent in number and person.
Example: "Each of the researchers submitted _____ final report."
"Each" is singular, so the pronoun should be "their" (accepted as singular in modern usage on the SAT) or restructure to avoid the issue.
SAT Trap: Ambiguous pronoun reference. "When the manager spoke to the employee, she was frustrated." Who was frustrated? The SAT will ask you to pick the choice that eliminates this ambiguity — usually by replacing the pronoun with a noun.