In this Austin American Statesman Article we read about University of Texas research that shows that the average tenure of a principal is less than five years.  It is even shorter in low-income area schools!  A few highlights of the research include that principals seem to stay longer in elementary schools and higher performing schools than secondary schools and lower performing schools.  

 One reason principal retention should be a concern is the research that shows how much slower and more difficult change and reform is when leadership regularly changes.  How long has your principal been at your school?  It used to be that a principal may stay at a school for years and years.  What do you think about this?