California State Auditor MHSA Report 2012

This report concludes the Mental Health and the Accountability Commission have provided little oversight of counties’ implementation of MHSA programs, particularly as it relates to evaluating whether these programs are effective. However, looking to the future, the opportunity exists for the state entities responsible for oversight to better demonstrate the effectiveness of the MHSA.
https://www.bsa.ca.gov/pdfs/reports/2012-122.pdf