Have you ever tried reviewing for the IELTS test?
Self-studying is said to be a good way to review for an examination since you have your own schedule to follow. You could easily study anytime and anywhere. However, self-studying has a huge downside: limited learning. Learning is much better when someone is around to guide and teach you during the review. This is the reason why IELTS review courses are offered to IELTS exam candidates.