The notices sent out to teachers and others are among the steps the district must take as it begins to sort through each employee's case.
Superintendent Erroll Davis, who has been adamant that none of the employees will work in front of the district's students again, says he plans to start termination proceedings as quickly as he can.
A state report released earlier this month implicated educators in 44 schools for cheating on state tests. District officials say 41 of the educators suspected of cheating have already quit or retired.