Why is attrition never mentioned in school reform?

You have to wonder why in the deeper conversations surrounding improving schools, why does attrition never come up as a topic of discussion.

For our school, and others in the same building, we have lost teachers mid-year for whatever reason.  So what happens to these students in terms of the continuity of their educational aspirations this year?

Does this mean the school should be shut down?  Should we punish a school for the decisions made by individual educators to leave their classrooms mid-year?  What possible solution is there for this problem of teachers who abandon their classrooms after a few months, a semester, or a couple of trimesters?

I don't question the motives for teachers who make this choice since it is not a reflection of their lack of conviction to serve the public, but rather serves to reflect the lack of support that we have as educators.

Just today, our school chancellor of 3-4 months has decided that the public sector and serving 1.1 million students was not for her.  Though I could have told her that from the get go, as many teachers could have offered insight into the wild-world of education, the feedback of teachers in classrooms doesn't seem to be respected by very many who seem to be sold on the notion that teachers aren't in it for the right reasons.

I find it troubling that the current reform effort seems to emphasize the tactics of business and corporate practices.  How do you incentivize a classroom by offering highly effective teachers larger classrooms (as Bill Gates seems to suggest)?  How do you go about rewarding schools with bonuses when they're in the process of phasing out?  How do you go about on this witch hunt that alleviates any and all responsibilities of parenting and student responsibility and place it all on the shoulders of teachers?

What's even worse is who listens to and buys into the mentality that the only reason that students cannot learn is because the person who stands before a classroom has a union and collectively bargains?  There's so much wrong with this mentality that we have to bring in the BEST possible educators by cutting their resources, by cutting back on their professional development, by eliminating diversity in their curricula, by paying teachers less through "performance" loop-holes, and the list goes on and on...

The chancellor leaving her post is the sort of disarray that we are in at the moment.  I find it to be tragic when a teacher makes the conscious decision to leave their students mid-year.  What's even more tragic is to appoint someone after selling their credentials as a manager and going to the trouble of lawyers and panels to get her into a position only to abandon her duties after 3-4 months.  Though I don't fault her for leaving a position she had no business in, I can't help but think that we should start focusing more on the issues of the city's inability to delegate the needs of classrooms and teachers rather than selling this flawed perception that teachers are the only reason that students can't graduate.

Perhaps the chancellor's stint in the hot seat will raise attention towards this issue of attrition in the field of education...