This concluding chapter offers some final reflections regarding the four objectives of the research project ‘Inclusive epistemologies and practices of out-of-school English learning (IEP!)’, funded by the Spanish Ministry of Science and Innovation, which ran from January 2019 until June 2021. These aims were: 1) to collaboratively research teenagers’ existing practices of using and learning English out of school time; 2) to implement new, inclusive, nonformal English language educational initiatives; 3) to evaluate the impact of the nonformal English language educational intiatives implemented; 4) to support the sustainability and transferability of the initiatives. Both the main outcomes and some enduring challenges are presented.