This paper reviews empirically studied strategic groups of non-profit organisations which operate in the area of education and culture in Poland. The study method has been proven useful for the members of the Third Sector but it has not been widely used by researchers. A group of strategic variables have been identified and tested against a sample of 189 organisations. The variables have been validated by way of testing their mutual correlations. The analysis proper using both the hierarchical and the two-step cluster methods has identified three largely different strategic groups in the sector. Each group has been thoroughly described and mobility barriers have been defined.