We could also argue that natural conversation is built up with more informal language, whereby a conversation is not scripted but flows along an unseen path to an unseen destination. Conversation does not follow a strict or distinct route but is nudged along in many different directions.The question we are asking is "Is the test successful in achieving its objectives?" and for this we need to look at what is known as the validity and reliability of a test. Validity has several forms and I have looked at content, face and criterion-related validity. Content validity is a representative sample of the skills and abilities which have been taught. The structure and content of the IELTS speaking test is the same at all levels. This means that an elementary level candidate will be answering the same questions of those at advanced levels. This does not provide a concrete level of testing as the structure and content do not provide a more challenging course for those with more advanced skills.Face validity looks at the measurement of skill the test should be assessing. If we look at the format of the IELTS test we can see that it is clearly established. It is universal in its approach and anywhere you look for information on the IELTS test it always provides the same information.