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Theory of Knowledge

Declan S., IBDP Geography tutor at Corestone Tutors, pictured ready to support IB students learn and succeed.

Teaches :

IBDP Geography

Declan S.

IBDP Geography

Portrait of Glenn L., an experienced IB Diploma Programme tutor at Corestone Tutors, specialising in IBDP Psychology and Theory of Knowledge.

Teaches :

IBDP Psychology, Theory of Knowledge

Glenn L.

IBDP Psychology, TOK

Teaches :

History, Extended Essay, Theory of Knowledge

Jason S.

History Cat 2 / 3, TOK Cat 3, TOK Exhibition Cat 3, EE Cat 2

Andrew is an accomplished IBDP History and Theory of Knowledge (TOK) educator with 16 years of experience shaping student success. His deep expertise in TOK is demonstrated through his leadership of four successful TOK departments and his previous role as an Associate Dean. Andrew possesses an insider’s understanding of the IB curriculum, having worked extensively as both an IB Examiner and a curriculum writer. This powerful combination of classroom leadership and assessment experience provides him with a comprehensive and nuanced perspective on what is required for students to excel in the humanities.

Teaches :

Chemistry

Zoha S.

Chemistry Cat 2 and Cat 3, IBDP Examiner

I’m a seasoned Chemistry educator with over 13 years of experience teaching curricula. I hold both Category 2 and 3 training certifications in IBDP Chemistry, along with a Category 3 certification in Theory of Knowledge (TOK), which allows me to provide comprehensive and inquiry-based science education. My passion lies in fostering a supportive and engaging learning environment that encourages critical thinking and international-mindedness.

Teaches :

SEHS, TOK

Karan S.

SEHS Cat 3, TOK Cat 1/2/3, IBDP SEHS Examiner

With over 14 years of dedicated experience in the International Baccalaureate, Karan is a seasoned educator specializing in Sports, Exercise and Health Science (SEHS) and Theory of Knowledge (TOK). His effectiveness in the classroom is uniquely enriched by his multifaceted expertise as an IB Programme Leader and Senior Examiner. These roles provide him with a comprehensive, 360-degree understanding of the IB philosophy and assessment criteria, which he leverages to guide his students toward academic excellence.

As a Senior Examiner, Karan possesses an invaluable insider’s perspective on the assessment process. For his SEHS students, this means demystifying complex exam questions and providing precise, actionable feedback on Internal Assessments to meet the highest marking criteria. For his TOK students, it translates into expert mentorship on structuring compelling essays and curating insightful exhibitions that align perfectly with examiner expectations. Karan’s experience allows a level of guidance that goes beyond the curriculum, preparing students not just to succeed in their exams, but to thrive as critical, inquisitive learners.

Teaches :

English B and TOK

Serkan Y.

English B Cat 1 and TOK Cat 1

For more than eight years, I have been dedicated to teaching and tutoring, with a core mission to help students grow in confidence as readers, writers, and thinkers. In the IB Diploma Programme, I teach English B and Theory of Knowledge, and I also have the pleasure of supporting learners as an Extended Essay advisor. My experience is focused on working closely with students aged 14–17, helping them develop not only their language skills but also their critical perspectives for academic success. I am passionate about using visible thinking routines and inquiry-based strategies in my sessions, as they spark curiosity and encourage students to build meaningful connections across all their subjects.

Teaches :

History, Extended Essay, Theory of Knowledge

Nicholas W.

History Cat 2, EE Cat 2/3, TOK Cat 1, History Examiner

Nicholas is a dedicated educator with ten years of experience in international education. Specializing in History and Theory of Knowledge (TOK), he serves as an examiner for both the International Baccalaureate (IB) and Cambridge International Education. Nicholas holds a Bachelor of Education in History from Moi University and is currently pursuing a Master of Arts in History at the University of Nairobi. His leadership roles have included TOK Coordinator and History Extended Essay Supervisor, reflecting his passion for mentoring students through complex academic challenges.

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