Grammar Errors test
Find subject-verb disagreements, tense shifts, and structural grammar issues in professional text.
Grammar ErrorsMost Common
Spelling ErrorsEntry Level
PunctuationEditorial
Factual ErrorsAdvanced
Full Edit ModeExpert
Grammar Errors
0 of 0 editsClick a word that contains an error and type the correction. Only change what you can name; you have a limited number of edits.
How this test is scored
Each answer is checked against the planted error. Your score is the share of errors you correct exactly.
Advertisement
Other formats
Spelling ErrorsSpot misspellings and transpositions — the most basic proofreading skill employers test.
PunctuationFind missing commas, incorrect apostrophes, and semicolon misuse in formal documents.
Factual ErrorsIdentify factual inconsistencies and logical errors — numbers, dates, and claims that don't add up.
Full Edit ModeComplete editorial review — grammar, spelling, punctuation, and style all at once.