Why is Grammar Important

There is no actual grammar test section in the IELTS test, but you are still graded on this by the examiner in the speaking test and writing test.

These are specifically what you are graded on in each test:

Writing:

Task Achievement / Response

Coherence and Cohesion

Lexical Resource

Grammatical Range and Accuracy

Speaking:

Fluency and coherence

Lexical Resource

Grammatical Range and Accuracy

Pronunication

So as you can see, grammar makes up 25% of each test.

However, it is also important for the 'lexical resource' part. This is your use of such things as your vocabulary, idiomatic vocabulary, and collocations.

You will be marked down on this if you are making mistakes with such things as word forms (e.g. using a noun form instead of a verb form) so this is also grammar related.