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Change the correct answer in a Canvas quiz and check every question

Canvas quiz answer keys go wrong when a question is copied or reworded. DeckOwl turns your notes into multiple-choice, true/false and open questions with explanations, so the key starts out right.

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Why answer keys go wrong and how to fix them

Most wrong keys in a Canvas quiz come from a question written too fast, and mistakes often surface later. Before changing the correct answer in a Canvas quiz that students have already attempted, check how your course handles re-scoring.

Re-read the source passage that supports each correct option.
Confirm that only one multiple-choice option is defensible.
Check true/false statements for absolute words like always or never.
Note any changed keys so you can explain them to students.

Example answer-key checks before you publish a quiz

Why is a multiple-choice question with two defensible options a problem?Students who pick the other option are marked wrong, so the key is unfair. Reword the stem or replace the weaker option.

What should a true/false statement avoid to stay unambiguous?Absolute words like always or never, and hidden qualifiers. Use precise wording that matches the source.

What makes a short-answer key reliable for grading?A model answer listing the key terms and accepted synonyms. Write it from the source so every grader applies one standard.

Why keep the source page beside the answer key?It lets you verify the key quickly if a student disputes a grade. The explanation should point to the passage it rests on.

What should you do after changing an answer key in a live quiz?Record the change and decide how to re-score submissions under your course policy. Tell students what changed and why.

Generate the full set

Questions with explanations

Each multiple-choice, true/false or open question comes with an explanation, so you can confirm the right answer before it goes into Canvas.

Exports for your LMS

Export to PDF or DOCX on Plus, or to QTI 2.1 and Moodle XML on Pro, to bring questions into your course.

Start free

Begin with 3 free generations a month and study in the browser. No credit card is needed to start.

How it works

Upload your source

Add a PDF, DOCX, PPTX, notes or a photo of a page.

Review each answer

Read the explanation beside each question and correct any key that does not match your source.

Edit in Canvas

Export the questions, then fix any remaining answer in your Canvas quiz editor before you publish.

A safer habit is to build questions from your own material and check each key against the source. DeckOwl gives every multiple-choice, true/false and open question an explanation, which makes a mismatched answer easier to spot before it reaches students.

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Frequently asked questions

Can I change the correct answer after students have submitted a Canvas quiz?

Changing a key after submissions can affect grades, so decide first how your course handles re-scoring. DeckOwl does not edit your Canvas quizzes directly, so you make the change in Canvas.

How do I check that a quiz question has only one correct answer?

Re-read the source passage and make sure every other option is clearly wrong or incomplete. A distractor that is also true usually means the question needs rewording.

Which export works for Canvas?

PDF and DOCX exports are on the Plus plan, and QTI 2.1 export is on the Pro plan. Check which format your course import accepts before you upload.

Is there a free plan?

Yes. The free plan includes 3 generations per month and studying in the browser, with no credit card needed to start. Exports require a paid plan.

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