Did you happen to see John Larmer’s, Director of Product Development, post where he attached a draft PBL Design Rubric? http://www.bie.org/forums/viewthread/11/
We are also working on a rubric for PBL Implementation.
Looking at school models where all teachers are successfully creating PBL, we find they have administrative and instructional leadership that puts a priority on providing the time and other resources necessary to make PBL happen. These leaders promote PBL to parents, the community, and the students, to be sure everyone is on board with the effort, and help troubleshoot implementation issues when they occur. They provide plenty of time for teachers to meet with colleagues to plan projects, critique and fine-tune lessons, and gather and share resources. Common, calibrated rubrics for 21st century learning goals are used by the whole school, and grading policies and practices are standardized to account for the use of PBL.
If you really want to “directly support” the teachers then how about facilitating a Critical Friends Tuning Protocol to help improve project design through critique (See Download)... http://www.bie.org/tools/useful_stuff/critical_friends
...or having a discussion with the staff about what makes a good Driving Question. Good projects start there (See Video). http://www.bie.org/tools/video/watershed_project_craft_the_driving_question
Our Executive Director, John Mergendoller, did upload a quick observation tool that he used during a conference (See Download). http://www.bie.org/professional_development/workshop_downloads_se/project_essentials_checklist