Here is a recent poster I placed outside the library door. At our school teachers have to place lesson plans outside the door and objectives for students in student language inside the room.
I wasn't asked to do this, but I thought it would be a great idea to advertise to teachers our 21st Century Standards.
Teachers have even asked me about them! It's been a great way to show that I am a part of the teacher/teaching team.
If anyone has other ideas out there for posting standards, please share them!