36 weeks: corresponding to the gap of IELTS 2.0, any individual score is 2.0 different from the school requirements, and you need to enroll in this course.
25 weeks: corresponding to the gap of IELTS 1.5, if any single item is different from the score required by the school, you need to enroll in this course.
15 weeks: corresponding to the gap of IELTS 1.0, if any single item differs from the score required by the school by 1.0, you need to enroll in this course.
10 week: all items meet the requirements of the school, but the total score does not meet the requirements of the school, so you need to enroll in this course.
5 weeks: Only one single-difference school in IELTS requires a score of 0.5 and needs to enroll in this course.