<p>This study defines a process for co-creating educational materials (Co-CreHAs) which aims to improve the motivation of high-ability students, where not only do the students themselves participate, but so too their teachers and family. From the process defined here, a software platform, (also called Co-CreHAs), has been developed. This platform includes AdaptHAs; the adaptation model that considers the numerous variables for these students. To develop Co-CreHAs, a case study implementing five experiences was carried out using Design-Based Research (DBR) methodology. The results of the MSLQ-44 test (Motivated Strategies for Learning Questionnaire) showed that the self-efficacy, self-regulation, use of cognitive strategies and intrinsic value aspects of motivation improved throughout the experiences. It was observed that Co-CreHAs and the use of AdaptHAs helped high ability students focus on co-creating and group work since “assessment anxiety” diminished as the students went through the experiences. The results obtained allow us to see that co-creating educational materials that are adapted to the needs of high ability students helps them improve their overall motivation in the learning process.</p>