I just read the IMPACT guidelines and compensation on DCPS site. (It's a LOT of info.) I'm no expert in education. I am just a parent of DCPS kids who are not in traditional/general classrooms. I'm concerned about turnover of high performers at our school.
On paper, as a development and compensation tool IMPACT seems fair and, frankly, more advantageous for employees than some other professions. A few things jumped out as
potential positives. It looks like the bonuses are highest for lower income schools and hard to staff areas like special ed. Salary increases are accelerated for lower income schools. If you have a masters degree and consistently reach highly effective you can be paid at PhD level. DC CAS is not the only quantitative measure, etc.
http://dcps.dc.gov/DCPS/In+the+Classroom/Ensuring+Teacher+Success/IMPACT+(Performance+Assessment)/IMPACT+Guidebooks
http://dcps.dc.gov/DCPS/Files/downloads/TEACHING%20&%20LEARNING/IMPACT/IMPACTplus/DCPS-IMPACTplus-guidebook-Sept-2010.pdf
But how is it being used? Is there an IMPACT for principals? How do we know principals and APs are actually using it as a development tool? Our AP is notoriously petty, vindictive, and unprofessional. I can easily see how some of our teachers who report to the AP would never make it to highly effective based on the AP's "observations". Worse still, they may not get any of the support they deserve that would ensure they achieve highly effective and stay in DCPS.
Who is watching the watchers? How can parents and students' observations counted?