In my senior high school, we had a popular issue: Can we wear casual clothes to go to school? We have no doubt that students have to wear formal uniforms to go to school under the traditional rules. However, why did we discuss this issue? The reason was that there was a new high school at that time, and one rule of this school was that students there could wear casual clothes. Hence, some students in my high school proposed this issue to the school. Personally, I did not support such a proposal for the following three reasons.