Form four candidates will be sitting their Kenya Certificate of Secondary Education (KCSE) examinations from today.
The candidates will start with the Mathematics paper in the morning and Chemistry paper one in the afternoon.
English paper one and two will be done on the second day with the first week of the exam ending with Chemistry practicals on Friday.
The month long examination is set to end on the 28th of this month with six hundred thousand candidates expected to sit the exams.
The practical part of the examination started on the 22nd of last month.
The Kenya Certificate of Primary Education (KCPE) examinations were done from the 30th of last month to the 1st.