Should boys and girls attend separate schools?

I don’t think boys and girls should attend separate schools.
First, because it’s a waste of resources. Maybe there’s only one school for boys near your home, so you’ll have to go to another one if you are girl. You have to spend more time on the road and that definitely will also cause traffic jams.
Second, boys and girls are better at different subjects and they also have different characters. Girls may be more patient . They may learn some painting and boys may learn Kong-fu and other subjects. They can learn from each other and help each other.
Third, boys and girls should know how to deal with some teenage problems and how to get on along well, or it might cause a lot of misunderstandings and troubles in the future.
For these reasons, I think they should not be separated.

[Good work and good point.  When you have independent phrases, it is better to separate them with periods than with commas.]