I'll give you some ideas, but i'm not going to write a whole essay for you.
- students should be allowed to express themselves.
- Many dress codes are primarily directed at female students and thus imply inappropriate things about them.
- uniforms can be expensive, and some students can't afford every aspect of the uniform their school requires.
(Dvorak, Petula.“For Homeless Kids, School Uniforms Are Just One More Problem to Overcome." The Washington Post, 1 Sept. 2016,)
feel free to use these topics in your paragraphs