These posters have been so helpful in my classroom. It's a great reference point for the teacher to use, especially when students are still familiarizing themselves with the teachers' expectations.
I highly recommend printing these posters in color, and then hanging them on large pieces of colorful construction paper before laminating them and putting them up on the wall. Put them in a prominent place in your classroom so that you can refer to them often when students need a reminder or when you're being observed by your administrators. I have had many teachers and administrators in my classroom comment on how nice it is to have these posted not only for students, but for parents, those doing observations, and substitutes.