Teachers at the school said she was the school president, a position she held diligently.
The 14-year-old scored 433 out of the possible 500 marks.
Faith Mumo, the best pupil in the 2020 Kenya Certificate of Primary Education (KCPE) exams, anticipated topping in the national test.
“This is a dream come true. I kept praying that one day I will be the best student in Kenya. It has come to pass!” an elated Faith told the Nation in a telephone interview shortly after Education Cabinet Secretary George Magoha announced KCPE results Thursday.