This article presents literature review that describes a systematic analysis of 113 empirical studies conducted between 1996 and 2009. This review portrays a picture of the rationales, goals, activities, roles, and outcomes in the different practicum settings in teacher education programs. The review shows that the rationale, goals, and activities in the different practicum settings are focused on teaching competencies and acquaintance with the pupils’ diversity. The review shows that the individual relationships between mentors, supervisors, and preservice teachers were attended by tension and conflicts ensuing from different interests, educational philosophies, and status differences that were not bridged.