The Principal and Teachers at one of my schools work together to create a bulletin board in the main hallway called "The Curriculum Scoop". It houses all of the things related to curriculum that are going on in the school and changes weekly. It's great because it is right at the front door so as parents and other visitors walk in, they can see the objectives being taught this week as well as examples of student projects and artwork.
I talked with the Principal about this board recently and she said she thinks it is very important to show what we are doing in the classrooms. She does her part by meeting with the teachers once per week and asking what they will be doing with the students. She types up all of that information and posts it on the board.
Are you doing anything similar in your school? I'd love to hear about it!