Mr. Kariuki samuel
Deputy Principal Administration
Oversees curriculum delivery, examination preparation, and academic performance across all forms. A mathematics specialist with a proven track record of improving CBC results.
School Leadership
Meet the dedicated team of professionals guiding Olderkesi Senior School toward excellence in education, character, and community impact.
Principal Since 2016
Principal's Office
Mr. Lemara Seno
Principal, Olderkesi Senior School
Mr. Seno leads Olderkesi Senior School with a vision of discipline, diligence, and excellence. Under his stewardship, the school has grown to an enrollment of over 621 students, strengthened its academic performance, and embraced the Competency-Based Curriculum (CBC) transition.
His leadership emphasizes character formation, community engagement, and modernization of facilities ensuring that Olderkesi remains a beacon of opportunity for learners in Narok West Sub-County and beyond.
Guided CBC transition for Grades 1012
Enrollment growth to 600+ learners
Strengthened STEM, Social Sciences, and Arts pathways
Champion of discipline and community service
Administration
Deputy Principals
Mr. Ngoshosh Emmanuel
Deputy Principal Discipline
Manages student welfare, boarding operations, discipline, and co-curricular activities. Ensures a safe, structured environment where every student can thrive.
Departments
Heads of Department
Mr. Mpoke Joel
Mathematics & Sciences
Leading Physics, Chemistry, Biology, and Mathematics departments with a focus on practical learning and STEM innovation.
Mr. Cheruiyot Amos
Humanities
Overseeing history, Geography, and CRE with emphasis on communication skills and critical thinking.
Mr. Kariankei Wilson
Technical Studies
Driving home science, agriculture, and business studies.
HOD. Mr Jacob Ntiyani
Student Welfare & Guidance
Coordinating counseling services, health programs, boarding welfare, and pastoral care for holistic student development.
Mr. Setek Abraham
Games & Co-Curricular
Managing sports, clubs, societies, and talent development programs that nurture physical fitness and artistic expression.
Madam. Doreen Lanoi
Languages Department
Leading the Languages Department, Ms. Lanoi oversees the teaching of English, Kiswahili, and other language subjects.
Student Leaders
Student Leadership Body
Leadership is not just for teachers. At Olderkesi, students are trusted with responsibility and empowered to shape school culture through elected and appointed positions.
School Captain
The highest student representative, leading the student body, presiding over assemblies, and serving as the voice of students to school administration.
Vice Captain
Supports the School Captain, assumes leadership in their absence, and coordinates inter-house activities and student welfare initiatives.
House Captains
Four house leaders (Blue, Green, Red, Yellow) who rally their houses for sports, academics, and cleanliness competitions throughout the year.
Class Prefects
Form-level representatives who maintain discipline, assist teachers, and communicate student concerns to the administration.
Dormitory Prefects
Oversee boarding life ensuring cleanliness, quiet hours, and welfare support for fellow boarders in each dormitory block.
Dining Hall Prefects
Manage meal times, food queue discipline, and dining hall cleanliness while communicating dietary feedback to the kitchen staff.
Our Approach
Leadership By Service
At Olderkesi Senior School, we believe that the best leaders are those who serve. Whether a teacher, administrator, or student, leadership is measured by the positive impact one has on others not by the title one holds.
Collaborative Decision-Making
Teachers, students, and parents all have a voice in shaping school policy and culture.
Transparent Accountability
Regular reports, open meetings, and accessible records ensure every decision is explained and justified.
Mentorship Over Management
Leaders are expected to mentor, guide, and inspire not merely to direct and control.
Student Voice Matters
Student leaders sit on key committees and their input directly influences school decisions.
15+
Leadership Positions
Lead With Us
Whether as a teacher, staff member, or student there is a place for you to lead and make a difference at Olderkesi Senior School.