Outside a mud-walled one-bedroom house in Bikeke village, Trans Nzoia County, 17-year-old Roselyn Nakhumicha bends over a plastic chair, her wrist pressed hard on a tattered exam paper.
With no left hand and a face bearing deep scars from a fire she barely survived as an infant during the 2007/2008 post-election violence, she scribbles answers with unwavering concentration.