The aim of this chapter is to show that, while the implementation of the blended-learning methodology in our classrooms may represent clear improvements from an instructional point of view, it does not necessarily produce improvements from an educational perspective. Blended learning raises the possibility of carrying out certain learning activities outside the classroom that traditionally could only take place within it. This is made possible thanks to the emergence of ICT, which makes certain tools available for this purpose. It is, however, worth asking whether the carrying out of these activities inside or outside the classroom produces the same or different outcomes. It is possible that there are experiences that are not worth making more flexible, despite the fact that academic results can improve. Education is a process that pursues ends rather than results. It is for this reason that it deserves to be thought of in the long term. Blended learning can improve academic results in the short term, but we should ask whether it is also positive in the long term. This is what we intend to address here.