They might not want to move to areas that have work, they might
find that they're running from contract to contract, it may be that a contract is only for nine months, they might be supply
teaching and after five years still haven't
found a
permanent position, want to do other things in their lives, mortgage or other things that they can't do while they don't have the security of a long - term job, or maybe they can only get part - time work.
When the 2009 - 2010 school year started, these schools had been unable to fill many of these vacancies and did not finally
find permanent teachers for some
positions until December 2009, forcing the schools to rely on series of short - term substitutes to
teach certain classes.