We Learn By What We See

I believe that teachers shouldn't need a dress code. Teachers are old enough to decide what to wear and what not to wear.
They already had to go to school and had just about the same dress code rules that students have today in schools. Teachers had to go through school with dress codes so they should know what is appropriate to wear to school. Some teachers choose to follow their school's dress code or they have a good idea of what would be appropriate to wear to school.

     Teachers know to dress appropriate

• Teachers dress appropriate to set examples for students.
• They have been to school themselves so they know what to wear.
• Teachers know how to dress professional for their job.   

Teachers know how to dress professionally because of their experience in schools, and school meetings with other teachers, staff members and parents. Teachers are there to set examples for the next generation to live successful and stable lives.
In this blog it talks about teachers being able to be responsible enough to dress professionally without being told what to wear. Some teachers do not have the money to buy expensive clothing. Some teachers prefer to look good for the job, but also be comfortable in what they wear. If the teacher is uncomfortable in what the school believes they should wear it can take away from their ability to teach. If the teacher is comfortable they are more likely to enjoy what they do and put more effort into helping their students succeed.   http://www.cta.org/en/Professional-Development/Publications/2012/09/September-Educator-2012/Dress-Code.aspx