The use of mobile technology in language learning has increased considerably, with an unprecedented adoption of mobile tablets in K-12 and higher education settings. Despite the number of recent small-scale studies that have found increased student motivation and engagement in learning as a result of using mobile tablets, there is a need to further examine the impact of these devices on student learning. This paper describes a study of 370 high-school graduate students learning English as a second language using the iPad in an intensive academic preparation program. The study utilised an online survey and student exam scores at the end of the 16-week treatment. Results of the self-reported data showed increased student motivation and engagement in English learning activities. Results were correlated with self-reported data and regression analysis models demonstrated that use of the iPad for specific English learning tasks correlated with better exam performance.