Why are your bulletin boards blank?

At the beginning of the school year I often get asked the same question as people walk into my classroom and look around;"Why are your bulletin boards blank?"

I strongly believe in a student-centered environment in my classroom. Therefore, my bulletin boards are decorated and covered by my students and with my students. We fill our bulletin boards with things that they have done or anchor charts that we have made together. When we are making our bulletin boards together and they have a say in what goes on the wall, they are likely to use the references more often.

Sure it looks nice if we cover our bulletin boards before our students enter the classroom. But is it relatable to our students? Does the 'stuff' we hang apply to our students if we don't involve them in it?

How do you make sure your students have bulletin boards that relate to their learning? How do you involve them in the creating of your classroom?