When a teacher no longer works at a school, the school may choose to un-mark them as a Current Teacher.
Currently, Blackbaud does not have a set procedure regarding former faculty members. Un-marking the Current Teacher checkbox on the BIO 1 tab of the Faculty/Staff record will not have any foreseeable negative consequences. However that teacher will no longer show up on the Course records they are associated with as an available resource. Please discuss a possible policy with members of your staff regarding former teachers.