Educational Resource

OET Writing Common Mistakes That Cost Marks

Many OET candidates fail writing not because of poor English, but because of repeated, avoidable mistakes. This guide explains what to fix to improve your grade.

Understanding Common Challenges

OET writing differs from general English examinations. Fluent sentences alone do not guarantee success if letters do not meet specific examiner expectations.

Uncertainty about which errors matter most
Overemphasis on grammar rather than structure
Limited access to expert feedback
Incomplete understanding of marking criteria

These challenges can be addressed once errors are properly identified and understood.

The 7 Most Common OET Writing Mistakes

1

Unclear or Incomplete Purpose

Many letters fail in the first sentence. If the examiner cannot immediately understand why the letter is written, marks are lost under Purpose and Content.

Frequent Issues

Purpose is too vague
Reason for writing is delayed
Reader is not clearly identified
2

Including Irrelevant Case-Note Information

More detail does not mean a higher score. Students often list case notes instead of selecting points that support the specific purpose.

Frequent Issues

Full patient history when not needed
Unfiltered case note listing
Adding background that distracts the reader
3

Copying Case Notes (No Paraphrasing)

A major issue for many candidates. Examiners expect professional, paraphrased sentences, not word-for-word copying from the notes.

Frequent Issues

Repeating the same wording from the notes
Changing only one or two words
Unnatural sentence structures
4

Poor Paragraph Organisation

Many letters contain correct information but in the wrong order. This affects Organisation and Layout scores significantly.

Frequent Issues

Mixing background and current issues
Jumping between topics
Writing one long paragraph instead of grouped ideas
5

Grammar That Reduces Clarity

Grammar mistakes do not only lose marks under Language. They also affect clarity and meaning.

Frequent Issues

Incorrect verb tense
Article misuse (a, an, the)
Wrong prepositions
6

Informal or Inappropriate Tone

OET writing is professional—not conversational and not academic. Tone errors directly affect your Genre and Style score.

Frequent Issues

Using informal phrases
Sounding too casual or too academic
Writing politely but unclearly
7

Weak Closing and Requests

Some letters end without a clear action. This weakens the impact of your Purpose and Content.

Frequent Issues

No clear request or recommendation
Vague closing statements
Repeating info instead of guiding the reader

Why These Mistakes Keep Repeating

Most students practice independently and may not recognize which mistakes matter most, or how examiners interpret their writing. Without targeted feedback, similar errors tend to recur.

"Without awareness of an error, correction becomes difficult."

Approaches to Address OET Writing Errors

Structured Practice Tools

Use step-by-step writing tools that identify structural errors based on official assessment criteria.

Access Practice Tools

Professional Feedback

Receive detailed corrections that identify where marks may be lost and provide specific guidance for improvement.

View Feedback Options

Understanding Performance Challenges

Lower scores typically indicate recurring specific errors rather than general language deficiency. Targeted feedback and structured guidance can support meaningful improvement.

Next Steps

Access professional correction services to identify and address specific areas for improvement.

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