MANAGING DATA AND QUALITY INDICATORS OF INTERNATIONALISATION OF HE: CASE STUDY, HEI IN SLOVENIA Valentina Jošt Lešer International School for Social and Business Studies, Slovenia valentina.jost@mfdps.si Nada Trunk Širca International School for Social and Business Studies and University of Primorska, Slovenia trunk.nada@gmail.com Valerij Dermol International School for Social and Business Studies, Slovenia valerij.dermol@mfdps.si Abstract: The article deals with the field of internationalization of higher education institutions (HEI) and describes the results of a study which is a part of HEIDA project (Data-driven decision making for internationalization of HE). The project responds to two specific needs of HEI: a) the need for a data collection and sharing tool or platform for management of HEI's internationalisation activities, and b) the need to bridge the gap in communication and joint work that should exist between HEI faculty, staff, senior management and students in internationalisation efforts and activities. The present study was designed as a case study in one HEI. It includes an analysis of documentation, survey, focus group and interview. Internationalization at studied HEI is considered as transversal activity over four institution's core activities, namely: education, research, collaboration with an external environment with social responsibility, as well as a provision of resources for operation. A combination of central and faculty/department level offices carry out coordination of international activities at HEI. Therefore, sometimes it is hard to keep the track the internationalization data that are collected and their location (faculty/department offices). Through the case study, we found out that the HEI's internationalisation outcomes can be improved by comprehensive data management system, combining the availability of international data and their analysis for action/improvement with extra training on data management for administrative and management staff. Keywords: higher education, internationalisation, management data, quality indicators, case study 1257