The first and foremost reason is that there is no communication between different sexes in single sex schools. Students should learn how to communicate with the opposite sex because the society consists of both male and female members. However, students in the single sex school cannot communicate with heterosexual students. This happens because there are not activities, societies or clubs in the school in which both sexes can take part in a pleasant, well-supervised environment. In addition, the relation between both sexes will be weaken. That will be not beneficial for both sexes in the future life. When both sexes are taught in the same class, the fence of shyness will be removed. What’s more, some research show that when both sexes study in the same class rooms their confidence level is higher than ones in single sex school.
Moreover, students in single sex school will not understand different nature. Different sexes have different nature. For example, boys are brave and strong and good at in math and computer while girls are careful and cautious and good at article and music. In the single sex school, students can not understand the difference of nature. They may misunderstand their nature because they only see the same nature. When both sexes study in the same class, they can learn from the opposite sex. For example, girls can learn braveness from boys while boys can learn carefulness from girls. Third, the sexist problem cannot be solved well in a single-sex school. This happens because there are no subjects allow for considerable classroom discussion or debate in a single-sex