Dery yɛ mmarinimfo a ɔkɔɔ suapɛn a ɛde University of Ghana wɔ afe 1977 bre a owie ntoaso sukuu a ɛde Navrongo Secondary School, na onyaa abɔdin krataa wɔ mmaranim mu a ɛde (LL. B) na wofrɛɛ no kaa Ghana mmaranimfo kuo a ɛde Ghana Bar no ho wo afe 1982.Ansa na ɔbeko mmarhye bagua mu wɔ afe 2008 mu no, Wɔpaw Dery se Aban mmaranimfo abediakyire wo afe 2003 mu. ɔsan nSo soom sɛ Soafo mprenu; sɛ Soafo a ɔhwɛ Atifi Atɔe Mantam mu firi afe 2004 kosi 2006 ne Soafoa a ɔhwɛ Atɛntrene so firi afe 2006 kosii 2007. Dery soom sɛ ɔkandifo ma dɔm kumaa wɔ mmarahyɛ bagua a ɛtɔ no nnum no mu wɔ Ghana. Dey dii nkunim wɔ Nandom mmarahyɛ bagua abatoɔ no mu, na afei Lara-Nandom abatoɔ mpɛsoa so wɔ 2008 mu nanso, ɔhweree agua no maa Benjanmin Kumbour wɔ afe 2012 abatoo no mu. Soom sɛ ɔkwnakyerɛfo maa kuo a ne din de Water Aid Partner Round Table (1993 - 2003 )