Consistent development of theoretical and practical knowledge essential for professional intervention, for the social work as complex profession is actualized in this paper. It is emphasized that in the practical learning process of the future social worker it is particularly important to master practical knowledge through reflecting, conceptualization and modified in case of unexpected situation of the client. The circumstances for such process developed by the mentor who guides the student in the practice placement and tutor who is responsible for supporting the student during the whole process of field practice. On the base of theoretical and empirical analysis the paper highlights functions of mentor and tutor and at the same time introduces experience in organization of field practice in social work studies. The practice organization model is designed on the base of discussed functions; this model also can be adapted by the other study programmes, which aim to educate reflecting practitioner.