Uniforms.

For

• People can see what school you belong to.
• You only have one thing to wear instead of going though your draws.
• When you go on school trips you would look smarter.

Against

• Some times your uniform can be uncomfortable.
• If your T-shirt is white it can get really dirty and stains could be very hard to get out.
• If you only have one pair of things you have to wear a dirty uniform.