Réponse :
Bonsoir, voici ma réponse :
1) A shirt, tie and a blazer constitue a school uniform.
2) It is important that a school uniform creates an identity because wearing a uniform is a badge for a pride and it is an important part of being a school student.
3) A school uniform teaches students to dress smart and takes pride in their appearance.
Voilà bonne soirée !