I think it is necessary for secondary school students to wear casual clothes when they are at school.
Firstly, casual clothes make all students feel comfortable. They can wear convenient clothes for outdoors and indoors activities. Secondly, casual clothes can give students freedom of choice. They can choose what sizes, colors, and fashions of clothing they love. Moreover, casual clothes can make students feel self-confident when they are in their favorite clothes because they choose these clothes carefully and ensure them to be well-dressed. Finally, it makes the school more colorful and lively with different styles, colors and types of clothes.
In conclusion, in my opinion, all the secondary school students should wear casual clothes.
 

I think school uniforms have many benefits for students. Firstly, wearing uniforms helps students not distinguish rich and poor. Rich or poor students are required to wear the same clothes to school, and poor students will not be inferior to their peers. On Monday, students wear uniforms look very beautiful and simple. The uniforms are beautifully designed so students can wear comfortably . On Tuesday, students will not take time to select clothes to school. This will help students concentrate on learning instead of thinking how I would wear, what to wear to school. Finally, the uniforms will help students save money on shopping. They will not spend too much money to buy clothes because they always have to wear uniforms to school. In conclusion, wearing uniforms is very beneficial to students.