Is what I say at a mediation kept confidential?

California Evidence Code section 1119 provides that nothing is said or admitted at a mediation, and no writing prepared in connection with a mediation, can be admitted as evidence in court or obtained by a subpoena or otherwise in discovery. However, “you can’t un-ring a bell.” Facts revealed during a mediation can be used to your disadvantage by an adversary later if the mediation does not resolve the conflict. You should discuss with your lawyer what should, and shouldn’t, be revealed during a mediation.