System cancelling classes after receiving what it called a credible threat to students safety. The threat was received in an email message. It was broadly targeted at many schools. Not just one or two locations. L. A. School police chief speaking at a News Conference today explained where the School District took this action. In an abundance of caution as superintendent cortinaz has indicated, we have chosen to close our schools today until we can be absolutely sure that our campuses are safe. Now, police and School Officials plan to search schools and continue to evaluate the threat. The school has more than 640,000 students. Were talking about 900 schools that cover some 720 square miles. It is the second largest School District in the nation. Parents have been asked to keep their children at home or to get them if theyve already left school, and this is an ongoing situation. Of course, were going to continue to follow this and bring you the latest. Hanks so much, sharon eperson, wit