John Sprague is currently teaching Theory of Knowledge, Philosophy and Religious Studies at Tanglin Trust School, Singapore. Previously, he was Director of IB and Head of Theory of Knowledge at Sevenoaks School in the UK and Head of Theory of Knowledge at Kings College School, Wimbledon.
He is the lead editor of IB Review, Hodder Education's latest flagship publication for the IB and writer for the IB Review's e-Review. He is also a TOK workshop leader and on the Senior Examining Team and Curriculum Review team for TOK.