http://www.cde.ca.gov/re/di/ws/morganhillcase.asp
http://www.cde.ca.gov/re/di/ws/morganhillcase.asp
Summary of the "Morgan Hill Case": The Concerned Parents Association won (in a court case against the CA dept of education) access to a database with your names, ssn, and much more.
On that page, first link is notice of information to be disclosed. Second link is the opt out.
