The 12th Joint European Summer School on Technology Enhanced Learning will take place from Monday, June 20th to Friday, June 24th, 2016 in Estonia. Pre-summer school activities are organized all day on Sunday, June 19th. The summer school aims to encourage participants to adopt a critical stance in thinking about the role of technologies in providing opportunities for learners and the potential of these opportunities in terms of learning. The summer school provides a stimulating learning environment where participants are given opportunities to: develop research skills; increase their knowledge base; collaborate with others in their own and complementary research areas; engage in debate; have access to experts in the field; and discuss their own work. The programme covers topics from a broad range of domains which contribute to advancing the field of Technology Enhanced Learning. TEL research projects are encouraged to provide doctoral candidates with a perspective of the state-of-the-art research under study in their working groups. The programme will also include practical and methodological workshops as well as opportunities for doctoral candidates to develop their personal research and discuss their doctoral work. Upon request we can provide a certificate for the institution of the participant stating how many lectures / workshops and individual work was delivered. For this summer school the overarching theme is learning analytics.