9), equally significant variations in the quality of programming that is available. In fact, Hill (2009) argues that the professional development system for teachers functions poorly because most teachers receive largely uninspired and often poor quality professional development and related learning opportunities.
Defining Staff Development. (1969, December 31). In LotsofEssays.com. Retrieved 07:14, July 05, 2025, from https://www.lotsofessays.com/viewpaper/2001501.html