What should I wear when I am asked to wear dark suit?

Regardless of what type of uniform any particular school assigns its students, all schools will have a summer version of the uniform (usually consisting of just a white dress shirt and the uniform slacks for boys and a reduced weight traditional uniform or blouse and tartan skirt with tie for girls) and a sports activity uniform (a polyester track suit for year round use and a t-shirt and shorts for summer activities). Depending on the discipline level for any particular school, students may often be seen wearing different seasonal and activity uniforms within the same classroom during the day. Individual students also often attempt to subvert the system of uniforms by adding "illegal" elements to their uniform (such as large loose socks or badges) or wearing their uniform incorrectly (altering skirts to "mini" size for girls and wearing trousers about the hips, omitting neckties and keeping shirts unbuttoned for boys). Students are also known to wear their sports activity uniforms under their more formal classroom uniforms as some Japanese schools do not usually have any gender segregated changing or locker rooms (they change in the classrooms). Certain schools also take to regulating student's hairstyles along with footwear and bookbags, but these particular rules are usually adhered to only on special occasions such as tri-mester opening and closing ceremonies and school photo days.