1I think it’s necessary for secondary students to wear casual clothes when they are at school because of the following reasons. 

1.Firstly, wearing casual clothes make students feel comfortable.

2.Secondly, wearing casual clothes gives students freedom of choice about size, colors and fashion

3.Therefore,students in secondary schools should wear casual clothes causes it schools colorful look so lively.

1. I think students should wear casual clothes when they go to school.

2. Firstly, students will feel comfortable.

3. Secondly, it's students' freedom of choice.

4. Therefore, it will make the school become colorful and lively.

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