Как я понял:

Author:

Agree:          

1)Some schools argue that there are many advantages to this system, but students can often see some disatvantages too.

2)Another advantages is students look smart when they are all together.

3) When you have to wear the same clothes as everyone else you don't have  a chance to develop your personal taste.

4)But the main reason why most students don't like school uniforms is that sometimes they are of horrible colours and styles.

Disagree:

1) The main advantage of school uniforms is that they give a common identity to the school.

2)Finally, students whose parents can't afford nice clothes look the same as every one else and so don't feel inferior.

My comments:

I believe that schools in Britain should be less strict about clothes, students should choose how to dress. That's all I wanted to say.