everyone connected with the parish in a pastoral or administrative capacity, employees and volunteers, is bound by confidentiality rules, as well as by general rules of ethical conduct, in the same way as for instances those in a law firm or medical office. If one comes upon confidential information about anyone, parishioner or otherwise, it is not to be shared with anyone except where there is a bona fide need to know. This is not the same as the more explicit seal of confession, which of course is binding only upon priests in the confessional.\
this means that such an employee or volunteer cannot share it with a third party, cannot discuss it with others, and cannot behave as if he has “secret knowledge” and take action based on the information, except such action as falls within his pastoral or administrative ministry or job description. For instance, if a child shares something with a catechist the parents should know, the catechist should share it with the DRE or pastor, or with the parent, but never with other volunteers, her family, other children in the class etc.
this confidentiality applies, by the way, to parish office staff as well, and most are very conscientious about observing it, but if there is a breech it should be reported to the pastor immediately.