For evidence of the benefits of feedback from evaluation systems, and the potential for professional development surrounding that feedback, see T. Kane et al, "Evaluating Teacher Effectiveness." Education Next.
Vol 11, No. 3 (2011); E. Taylor and J. Tyler, "The Effect of Evaluation on Performance: Evidence from Longitudinal Student Achievement Data of Mid-Career Teachers." National Bureau of Economic Research (2011).
Much professional development, particularly those that are not aligned to specific feedback from teacher evaluations, has been found to be ineffective. For evidence see M. Garet, "Middle School Mathematics Professional Development Impact Study: Findings After the Second Year of Implementation." Institute of Education Sciences (2011).
For additional evidence regarding best practices for professional development, see "The Deliver, Financing, and Assessment of Professional Development in Education: Pre-Service Preparation and In-Service Training." The Finance Project (2003).