Swedish schools have during the last few years started to providing pupils in high school with tablet-computers. By doing interviews I examine how pupils in high school use tablet-computers in different ways and how that affect their studies. From a sociocultural perspective and with the concept of artefacts I analyze how suitable tablet-computers are for studies on this level of education. My results show that the tablet-computers are used as the pupils primary study tool. They are available to all pupils and can be used in most parts of their studies and this creates new opportonities in how to interact with collective knowledge and with other people. The pupils in this study do not think that the tablet computers, at this pint are suitable when it comes to using them for examinations, advanced visual design and creating more extensive texts. My conclusion is that tabet-computers have qualities that could contribute to high school pupils studies in a meaningful way. However the strategies through which they are implemented are critical to whether tablets-computers actually will improve pupils studies or not.