John Poppert - Leadership Team Go back to directory. Add to Address Book. John Poppert Administrator Administration Work Phone: (308) 995-6585work Home Phone: (308) 995-6587home Work Email: wbua.cbccreg@rfh11.betgro.11use@treppop.nhojINTERNET BiographyJohn is a member of the Educational Service Unit Coordinating Council (ESUCC).