Education Code (EC) §44258.9 requires that the Commission on Teacher Credentialing biennially report to the Governor and Legislature the result of assignment monitoring for certificated employees in California as submitted by the County Offices of Education. The 2016 Assignment Monitoring Report includes data for California's lowest performing schools ranked in Deciles 1, 2 and 3 of the 2009 Base Academic Performance Index (API) for the 2013-2014 and 2014-2015 academic years (excluding charter schools). In addition, this report includes assignment monitoring data for certificated staff in all California public schools (excluding charter schools). This data is collected on a four-year monitoring cycle and includes aggregate data from the 2011-2012 through 2014-2015 academic years.