This study assesses the extent to which a medium-term international service learning (ISL) project led by a Canadian university in partnership with sub-Saharan African universities achieves five objectives with respect to the interns: increasing local and global community engagement, activating leaders, developing global citizens, personal and professional growth, and enhancing Canadian and international networking. The study relies on 250 completed online surveys of alumni who graduated between 2012 and 2020. ISL alumni responses are controlled for BA-related maturation effects by comparison to alumni who did not participate in any International Educational Experiences (IEEs) and for selection bias by comparison to students who participated in other IEEs. The study finds that ISL promotes all five objectives, that it has net impacts vis-à-vis the BA alone for all objectives except leadership activation, and that it has net impacts vis-à-vis other forms of IEE with respect to community engagement activation, global knowledge, and development of problem-solving skills.