Being a public secondary school in Kenya, Nzambani Boys’ administers the 8-4-4 curriculum as developed by the relevant government of Kenya agencies such as the Ministry of Education, Educational Commissions and we follow the Syllabus as developed by the Kenya Institute of Curriculum Development. We administer internal exams and others that are jointly prepared and set by groups of experts drawn from the school and its partnering schools. Students take two CATs every term which carry 30% and end of Term Exam that carry 70%. Every term, the students are graded and given report cards and their progress records are filed by the Curriculum Department.

Students are also subjected to weekly CATs and Maths Contests every Wednesday. They are also evaluated through random class assignments. The students are made aware that the termly results are crucial indicators of their efforts in their studies. Towards this end, a group of students is elected to liaise with the teachers and the administration  regarding the whole exercise of evaluation. The peak in the evaluation of the curriculum is the National Exams, the KNEC administered KCSE exams. At the end of the four-year course, the students are awarded Kenya Certificate of Secondary Education (KCSE) capturing their academic scores and the other abilities are captured in the school leaving certificate.