STUDENT COMPETENCY TEST: male pupils turned out to be better in Geography than girls?

The bar chart below shows the percentage of students who passed their high school competency exams, by subject and gender, during the period 2010-2011.

A comparison of proportion of high school competency test which are passed by pupils according to compulsory and their gender during academic year 2010-2011 is shown in the bar chart. Overall, male students had percentage of passing exam higher than female only in Geography and the lowest proportion of male who passed exam was in chemistry.

It can be seen that, in science subjects, the highest proportion competency of girl students was computer science. There was 56.3% and it was higher 14.2% than boys in the same compulsory. The small gap of percentage between male and female students were in mathematics and physics by not more than 3%. Meanwhile, the lowest percentage of both genders was in chemistry, only a minority of male students at 14% and female students were higher about two times than male pupils.

On the other hand, in social subjects, the highest proportion for both not more than 50%. Foreign languages experienced the greatest proportion for boys and girls students at 46.8% and 47.4% respectively. Lastly, the lowest percentage of female competency in social area was geography while for male student was in history.

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I have no idea why some of the members in this forum addressing overview more than once. Actually, you only need to address an overview once. It can be either in the beginning of your essay (introduction paragraph) or it might be in the last paragraph. Addressing an overview by using cohesive device is also suggested, but using TWO cohesive devices related to overview is NOT. It is unfortunate that you accidentally addressed them twice by stating "overall" at first then in the beginning of the first body paragraph you mention "it can be seen that". For your information, there are many cohesive devices that can be used in the first body paragraph. Those are "To begin with", "A closer look on the data/graph/table/chart", "Initially", and many more. However, it might look simple but a simple mistake like this can be taken into account because it also becomes one of the criteria that is assessed in IELTS writing task 1. Unclear or No overview can make you only score 5 in an actual test, the same case as this essay.

1. COMPULSORY : adjective : meaning : important because it's law. So what is your mean there ?

2. add the because it refer to the graph


3. What is the highest value? I think it is greater to complete your overview with "highest amount"