IELTS 5,TEST 1,WRITING TASK 2

Universities should accept equal numbers of male and female students in every subject.
To what exdent do you agree and disagree?

I don't think universities should accept male and female students in every subject equally. To accept students basing based on the features of gender and subjects is the best way. (This sentence, as written, contradicts your opening statement. If you think that gender acceptance shouldn't be even, but should be a lesser consideration, then you need to state that. Also, "and subjects" is unclear. What does this mean?)
It's obvious that male students are normally much stronger than the females one physically. To a certain extant,female students can't handle heavy work, not only in daily life, but also in their studies as males do. So subjects such as physical excercise and architecture, which require much more physical power and energy, are accepting more male students. (Does this mean that these disciplines are more welcoming to male students? If so, then it should be "are more accepting of male students." If you mean they currently enroll more males, then it should be "accept more male students.")
To the contaryOn the other hand,(to the contrary means you are negating your previous statement) girls are doing better than boys in mental way. Girls are really good at dealing with details because they prefer to observe people. They can figue out how people feel or what people need very quickly soon, then try their best to help them. That's why they are active in subjects like nursing, elderly care age caring and teaching,all of which accept more girls as well. (You don't need "as well" here because you're not adding to a previous list of subjects that accept girls.)
Last but not least,the requirements of the subjects are playing an important role in accepting students. Different subjects has have different standards for students. For example, Chinese traditional massaging requires physical strength so urgently that men are more accepted,while women are more frequenty accepted by in skin careing,which requires concerntration concentration and patience.
In my opinion,students should be accepted by universities depending on their respective advantages as well as each subject's requirements. (It's common here to restate your opening arguement. You may consider adding "rather than basing selection on gender" or something similar.)