Workshop sessions for a whole or subset of the faculty enable efficient exploration of teaching strategies together, particularly if all will be using them (as with writers workshop, for example). This has been the traditional approach to professional development, and it remains valuable, though it doesn’t insure adoption of new instructional ideas on its own. IWP programs therefore use this mode strategically in combination with others.
Smaller teacher groups can also work together, often focused on studying professional books or articles, facilitated by the IWP leader.
These can be scheduled during professional development days, after school, or during more extended time during the summer.