Abstract: This comparative analysis study is carried out in other to compare and contrast the educational systems of Ethiopia, Uganda and the United Republic of Tanzania with particular focus on their secondary education. For the purpose of this study, the two states making up the Republic of Tanzania-Tanzania Mainland and Zanzibar were treated separately because they provide basic education separately as stated by the Tanzania Republic Minister for Education and Culture, Prof. Juma Kapuya (MP). The study looked into all the facets of the secondary education of the countries studied during the years for which data were available. Different literatures were reviewed on the topic from where relevant data were drawn and analyzed. Thereafter, useful logical conclusions were made. The study revealed that the secondary education of the countries studied and their education systems in general were greatly affected by the civil wars that ravaged these countries for so many years. The governments, however, are not sleeping on their oars. Rather, they are seriously taking measures to improve the standard of education generally and most especially at the basic levels. However, more still needs to be done especially in the area of educational finance and teacher education.