Every year the Kenya National Examinations Council, knec, invites teachers to mark the Kenya Certificate of Secondary Education, KCSE, and Kenya Certificate of Primary Education, KCPE, exams. To get the invitation one has to be first trained as an examiner. The marking invitation letter contains such details as the marking Centre, rates and other regulations to be observed during the all important marking exercise. The KCPE and KCSE exams are usually marked in November/ December every year.