Content
Answer the prompt directly and develop relevant ideas, details, reasons, or examples.
Free two-part writing practice
Interactive
Writing
Practice the full two-step task without signing in. Write an initial response, answer a reviewed follow-up, then get one combined PrepEx score estimate with feedback on both parts.
30 seconds
prompt preview
5 + 3 minutes
two responses
1 task
per current test
PrepEx provides independent DET-style practice. It is not affiliated with or endorsed by Duolingo. PrepEx results are practice estimates, not official DET scores.
Practice preview · Preview
0:30
Start the 30-second preview to reveal the prompt.
A community learning center is considering asking every new member to attend one welcome event. Do you think this is a useful policy? Explain your view.
A related follow-up will appear after Part 1.
Your Part 1 response
Your response is ready for Petra AI feedback.
Get a PrepEx DET score estimate plus feedback on content, coherence, grammar, and vocabulary. Your response is graded without being saved to a learner profile.
2 free AI grades per IP in each 24-hour window · 5 timed attempts in this browser session
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What the response can demonstrate
Four criteria, one connected performance.
The public DET writing rubric considers content, discourse coherence, vocabulary, and grammar. PrepEx reports each criterion separately so the next revision has a clear purpose.
Coherence
Organize ideas so they progress clearly and the relationships between them are easy to follow.
Vocabulary
Use accurate, appropriate words with enough range and precision for the task.
Grammar
Use controlled sentences and enough structural range to express the intended relationships.
Task-specific control
Extend the first response instead of restarting.
Interactive Writing measures how well you respond to a new but related direction. Part 2 should add information while remaining connected to Part 1.
Part 1: establish your answer
Make your position or main experience clear, then develop it with explanation or an example.
Part 2: answer the follow-up
Respond to the new direction directly. The reviewed follow-up is selected from a fixed bank.
Across both parts: keep the link
Add genuinely new information without changing to an unrelated topic or merely repeating Part 1.
There is no published official word minimum or required paragraph count for this task. More writing helps only when it remains relevant, clear, and controlled.
Current format, checked August 2026
Task facts come from current DET sources.
PrepEx follows the public task format and writing construct, uses an original reviewed prompt, and labels every result as an independent practice estimate.
The task has a 30-second preview, five-minute first response, and three-minute related follow-up. Read the official task page.
Official public guidance describes content, discourse coherence, vocabulary, and grammar evidence. Read the official rubrics.
Interactive Writing informs Writing, Literacy, and Production. Read how DET items are scored.
Quick answers
Interactive Writing FAQ
How long is Interactive Writing?
You see the initial prompt for 30 seconds, write Part 1 for up to five minutes, then answer a related follow-up for up to three minutes.
Is there an official minimum word count?
No task-specific minimum is published. Use the available time to answer directly and develop relevant ideas in clear English.
Which DET subscores does this task inform?
Interactive Writing informs the Writing individual subscore and the Literacy and Production integrated subscores.
Does PrepEx save or share this response?
No. This anonymous acquisition preview grades the response in memory. It does not create a submission, update progress, or share the text with an institution.
Is the PrepEx estimate an official DET score?
No. Petra AI provides an independent practice estimate and response-specific coaching. Only Duolingo can issue an official DET score.