IELTS is holistic English language test comprising four subsections : Listening , Reading , Writing and Speaking. Each module is scored for 9 bands and the scores of all the four modules are averaged as the overall band score. There are two types of IELTS – Academic and General Training, which differ in Reading and Writing modules.
A specific IELTS score is mandatory or sometimes advisory for those who wish to go abroad ( accepted in over 100 countries including the U.S.)for higher education , for work permit , for Immigration , for professional registration , for dependent visa and sometimes even for business visa. A good IELTS score is always an added advantage for visa or for job abroad or home.