In 1947 Michuki was admitted to Nyeri High School for his Secondary education, proceeding to Mang'u High School for his Advance Level education. It was while a student at Mang'u High School that Michuki met his lifelong friend, Mwai Kibaki, under whom he later served a senior civil servant and as a cabinet Minister when the latter became the President of the Republic of Kenya in 2002. In 1961, Michuki secured a government scholarship to study at Worcester College, a constituent college of the University of Oxford, United Kingdom where he graduated with a bachelor's degree in Economics, Finance and Public Administration.