Police arrested a 2018 KCSE student for writing a plan to kill President Uhuru Kenyatta and Garissa Township MP Aden Duale.
His death ideas came out when he was writing English Paper One, which is functional skills.
The paper from the student of Elime Bora Secondary School in Mandera County was noticed in Nairobi when Kenya National Examinations Council (KNEC) officials were preparing for exam marking.
The boy who is facing treason, was ordered to under mental assessment by Justice Duncan Mtai before his case is heard on Monday.
The official exam marking will begin on December 7 and end by December 18.