3 IELTS Writing Mistakes That Cost You a Full Band

Most students at the 6.0–6.5 band level do not have a language problem. They have a task management problem. They write long, grammatically decent essays that lose marks on Task Achievement and Coherence — the two criteria that examiners score first.

Mistake 1: Discussing Both Sides Instead of Answering the Question

A 'Do you agree or disagree?' question requires a clear position. Many candidates write a balanced essay ('On one hand... on the other hand...') without stating which view they hold. Examiners score this as failing Task Achievement — you did not complete the task.

Mistake 2: Poor Paragraph Structure (One-Idea Rule Violations)

Each body paragraph should develop one central idea: topic sentence → explanation → example → how it supports your argument. Candidates who mix two ideas in one paragraph, or who write topic sentences that are too vague, consistently score below band 7 on Coherence and Cohesion.

• Start every body paragraph with a clear topic sentence that states the idea
• Do not introduce a second idea mid-paragraph — start a new paragraph
• Use specific examples, not vague generalisations ('In many countries...')
• End with a sentence that ties back to your argument — not just a summary of what you wrote

Mistake 3: Overusing Linking Words

Students told to 'use more connectors' often write essays stuffed with 'Furthermore', 'Moreover', 'Additionally', and 'In addition' at the start of every sentence. Examiners describe this as 'overuse of cohesive devices' — a direct penalty on Coherence and Cohesion.

Band 7+ Writing uses a variety of cohesive strategies — pronoun reference, lexical repetition, subordination, and logical sequencing — not just linkers. The goal is writing that flows naturally, not writing that looks like it was formatted around linking words.