▁of ▁Labor . ▁Where as ▁kind er gart ens ▁follow ▁educational ▁a ims , ▁nur ser y ▁schools ▁are ▁pre domin antly ▁concerned ▁with ▁providing ▁care ▁for ▁inf ants ▁and ▁to dd lers . ▁T ogether , ▁these ▁two ▁kinds ▁of ▁institutions ▁en roll ▁ 8 6 % ▁at ▁age ▁ 3 ▁and ▁ 9 9 % ▁at ▁age ▁ 5 ▁prior ▁to ▁their ▁entrance ▁into ▁the ▁formal ▁system ▁at ▁first ▁grade . ▁The ▁Ministry ▁of ▁Education ' s ▁ 1 9 9 0 ▁Cour se ▁of ▁Study ▁for ▁Pres ch ools , ▁which ▁applies ▁to ▁both ▁kinds ▁of ▁institutions , ▁covers ▁such ▁areas ▁as ▁human ▁relationships , ▁health , ▁environment , ▁language , ▁and ▁expression . ▁Starting ▁from ▁March ▁ 2 0 0 8 ▁the ▁new ▁revision ▁of ▁curr icul um ▁gu idel ines ▁for ▁kind er gart ens ▁as ▁well ▁as ▁for ▁pr esch ools ▁came ▁into ▁effect . ▁ ▁South ▁Korea ▁ ▁In ▁South ▁Korea , ▁children ▁normally ▁attend ▁kind erg arten ▁( ▁y uch i ▁won ) ▁between ▁the ▁ages ▁of ▁three ▁or ▁four ▁and ▁six ▁or ▁seven ▁in ▁the ▁Western ▁age ▁system . ▁( K ore an ▁ages ▁are ▁calculated ▁differently ▁from ▁Western ▁ages : ▁when ▁they ▁are ▁born ▁they ▁are ▁considered ▁one - year - olds , ▁rather ▁than ▁one ▁day ▁old . ▁Additionally , ▁every ▁January ▁ 1 , ▁everyone ' s ▁age ▁increases ▁by ▁one ▁year ▁regardless ▁of ▁when ▁their ▁birth day ▁is . ▁Hence ▁in ▁Korea , ▁kind erg arten ▁children ▁are ▁called ▁five