From the Sacramento Bee:
California has one of the nation’s most restrictive laws for public access to information about police officer misconduct. State law bars disclosure of all police personnel records – a restriction that prevents the public from finding out which officers have engaged in serious misconduct. What’s more, courts and police agencies have interpreted that confidentiality broadly to cut off public access to nearly all information that might be used in personnel decisions, including internal affairs investigations and hearings on civilian complaints.
Under California law, civilians who file complaints against officers find out little about what happens next. To avoid violating state law, departments often don’t disclose even whether the officer was found to have violated policy, much less exactly what policy the officer violated, what kind of discipline resulted, or any explanation of why the department reached the result it did.