For the past six years, California has been revising its preparation system for school and district administrators, including developing the California Administrator Performance Assessment (CalAPA), the first required performance assessment for preliminary administrator certification. In this study, researchers from the California Comprehensive Center at WestEd, the Principal Leadership Institute at the University of California at Berkeley, and the Regional Educational Laboratory West at WestEd sought to examine the initial impact of the CalAPA policy by identifying early changes (i.e., changes made through March 30, 2018) in administrator preparation programs' practices. [Additional support for this research was provided by the Principal Leadership Institute at the University of California at Berkeley.]