Paris Jackson has been in meltdown mode for nearly a year ... this according to sources connected to her exclusive private school.
Our sources from the exclusive Buckley School in the San Fernando Valley tell TMZ ... school officials were aware Paris was dealing with a "major family trauma" when the school year began last September. Based on the timeline, it appears the issue involved Katherine Jackson's mysterious "disappearance" last July.
There were reports Michael Jackson's siblings were holding Katherine as part of a money grab -- something they deny. Paris confronted several of the siblings in a heated argument outside the family's Calabasas home.