Expanding access to schooling in developing countries is critical for achieving poverty reduction and sustained economic growth. Although countries in sub-Saharan Africa (SSA) have expanded access to primary schooling in the past 15 years, absorbing primary school graduates into secondary school remains a challenge. The Government of Uganda (GoU) introduced the Universal Post Primary Education (UPPE) in 2007 and this further constrained the Ugandan education budget. Because of the limits of the education budget, the GoU had to rely on external support to push to UPPE program. This paper examines the cost effectiveness and benefit cost analysis of the UPPE and Training Expansion and Improvement project supported by the Africa Development Bank (AfDB) during the 2008- 2014 period. The project seeks to change the secondary school enrolment profile in Uganda by expanding the number of public secondary school places available. Based on the expected post secondary school earnings as our only benefit considered—the project is very sustainable. Our sensitivity analysis also reveals that the projects remains sustainable even if the expected benefits are reduced by up to 30 percent or even if the project implementation is delayed by up to 3 years.