The purpose of this study is twofold: (1) to propose a conceptual framework for classifying ICT use in education and (2) to develop and test a structural model including both teacher- and school-related factors, to explain technology integration. A conceptual framework has been developed in order to classify use of ICT (information and communications technologies) in education with an instrumentalist perspective. Indicators of technology integration have been clearly identified and associated with the constructs in the framework. Access, technical support, administrative support and professional development support are examined under school-related variables, while teachers' beliefs and ICT competencies are investigated under teacher variables. A model based on these variables has been proposed and tested through structural equation modelling. Data was collected from 403 teachers working in primary and secondary schools. Results have indicated that factors in the model explained 70% of the variance in the technology integration that showed that the substantial amount of variance was predicted.