symbol of being a student
Often when I am standing behind someone in a line, I have heard the teller ask for a student ID card and more often than not, the person has left it at home. When he/she is wearing the uniform, getting student discounts on coffees, fast food, and even travel will be a piece of cake. If someone asks for a student ID, simply do a twirl and show them your clothes as identity of being a student.
Difference between students and teachers
When I was teaching, it was often hard to differentiate between the throngs of students roaming through the college and the dozens of Teacher Assistants (TA) who had barely graduated a month ago. Sometimes I would invite a girl to grab coffee with me and only later on realise that she is a student and not a TA. Had the students been in uniform, this problem wouldn’t have taken place at all.