Prof. Rugege was educated at Makerere University in Uganda, Yale Law School in the United States of America and Oxford University in England where he obtained the LLB, LLM and D.Phil. degrees respectively.
He started his law career as a lecturer in law at Makerere University before being forced to flee the terror of the Idi Amin regime. He then taught at the National University of Lesotho and University of Swaziland rising to the position of Associate Professor.
During 1995, he was a Visiting Scholar at Cornell Law School where he taught African Law. His last teaching post before being elevated to the bench was in Cape Town, South Africa.As Professor of Law at the University of the Western Cape, where he taught Constitutional Law.
He is author of scholarly journal articles and has addressed numerous conferences in many countries.
Prof. Rugege was appointed to the Supreme Court of Rwanda in 2004 as the Deputy Chief Justice. He is the Chief Justice of Rwanda from December 2012.
Since 2005, he has also been the Principal Judge of the First Instance Division of the Court of Justice of the Common Market for Eastern and Southern Africa (COMESA).