Make sure that the binding of community is done based on a premise that is both simple to understand and allows at least one safe harbor from direct individual criticism, even if that is allowing non-participation in certain activities. A general community needs a safety and a common simple goal allowing for many levels of participation while offering all levels similar benefits of community.
Like R.A.W. has said, "The more you see yourself acting like a cosmic smuck thus less of a cosmic smuck you will become". I think it is very important that the environment stresses awareness of moment to moment actions and thoughts. If not, I think decent application of the knowledge of rationality will be very hard indeed.
If this is an important aspect of your 'school', then I think it would be hard to game the system without actually learning what is supposed to be learned. This would especially be true when it is a part of the reputation heirarchy. Sure, some could mimic to gain status but others with actual awareness would see through them easily.