Ansa no ɔbɛyɛ mmarahyɛ baguani no, ɔsoom sɛ ɔkyerɛkyerɛfo firi afe1998 kosii 2006 maa adwumakuo a ɛne Ghana Education Service. ɔsan nso soom sɛ boafo soronko maa asoe a ɛhwɛ nkuro ne nkurase amammuo so firi afe 2007 kosii afe 2008 mu. ɔyɛɛ adwuma sɛ aban kraakyeni wɔ John Agyekum Kuffour ase wɔ afe 2008 mu. Na Duker yɛ ɔkwankyerɛfo maa adwumakuo a ɛne Integregated Social Development Centre (ISODEC) firii afe 2011 kosii afe 2012.