A shekara ta 957, an aika malami Shuang Ji zuwa Goryeo a matsayin manzo, kuma bisa shawararsa, Gwangjong ya kafa jarrabawar aikin gwamnati a shekara ta 958, da nufin korar jami'an da suka samu mukaman kotu saboda tasirin iyali ko kuma suna ba bisa cancanta ba. .Jarabawar, bisa jarrabawar
Tang ta ma'aikatan gwamnati da kuma na gargajiya na Confucian, an bude shi ga dukan maza masu 'yanci don ba kowa, ba kawai masu arziki da masu mulki ba, damar yin aiki ga jihar ba, amma a aikace kawai 'ya'yan maza. gentry zai iya samun ilimin da ya dace don yin jarrabawa;dangin sarauta na manyan mukamai biyar, maimakon haka, an bar su da gangan.A shekara ta 960, sarki ya gabatar da launuka daban-daban don tufafin kotu don bambanta jami'ai na matsayi daban-daban.Manyan jarrabawa sun kasance na adabi, kuma sun zo cikin nau'i biyu: gwajin abun ciki (jesul eop), da gwajin ilimin gargajiya (myeonggyeong eop).Ana gudanar da wadannan gwaje-gwaje a hukumance duk bayan shekaru uku, amma a aikace an saba yin su a wasu lokuta ma.An yi kallon gwajin abun da aka yi a matsayin mafi daraja, kuma an raba wadanda suka yi nasara zuwa maki uku.A daya bangaren kuma, ba a tantance wadanda suka yi nasara a jarrabawar gargajiya ba.A cikin daular, wasu maza 6000 ne suka yi jarrabawar tantancewa, yayin da kusan 450 ne kawai suka samu nasarar cin jarrabawar gargajiya.