Hi Phillip!
At Chinese schools, students do wear school uniforms.
They usually look like track-suits (sports clothes) and the kids at school complain about them a lot =)
At our school (Luhe) we had three different colors - Green for the middle school, and blue and red for the high school.
In winter we got uniforms that were warmer and in the summer we got to wear short sleeves.
Here is a picture of what the uniforms look like:

- Caro