According to The Glossary of Education Reform, learner engagement “refers to the degree of attention, curiosity, interest, optimism, and passion that students show when they are learning or being taught, which extends to the level of motivation they have to learn and progress in their education.” This definition does not concern only students but also school leaders, educators and any other external factors that might “engage” learners in the design and in the decision-making process about their learning. Learners’ engagement is concerned with the relation between the time and effort that has been invested in optimising the learning experience. Engagement can be found in behaviours, thinking processes and signs of emotion. In other words, engagement is perceived as a behavioural, cognitive and emotional dimension.