Angela Chepkosgei, who garnered 423 marks from the same school, hopes to join Alliance Girls High School and pursue a career in neurosurgery later on.
Bishop Muge Memorial School Kimng'oror, a public institution, managed a mean score of 393.21, with 44 pupils getting over 400 marks.
Headteacher Sammy Sawe said the school had registered an improvement from the previous year's results where it had a mean score of 391.
In Trans Nzoia, Kitale School also produced the county's top performers, with Samson Kiago Isaboke scoring 422 marks in the class of 283 candidates.
St Joseph the Worker Hema Schools has a mean score of 398.1, with its top student, Leon Messi, getting 417 marks.
Hilltop Preparatory School posted a mean score of 380, with its top candidate, Metchelle Chebet, scoring 415 marks. Brain Wambia came second with 414 marks.
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