Uniforms create a feeling of oneness and belonging. Everyone can be on the same team. and to inspire a feeling of 'oneness.'
Uniforms add measures of safety in identical dress.
Uniforms also raise students' expectations of themselves. When dressed neatly and seriously, students tend to behave seriously. Often teachers find calmer, more polite, more attentive students. Students seem to feel more confident in the way they look, and so they have more confidence in themselves...