The Universidad Carlos III de Madrid has been offering several face-to-face remedial courses for freshmen to review or learn concepts and practical skills that they should know before starting their degree programme. During the last two years, our University has adopted MOOC-like technologies to support some of these courses so that a "fipping the classroom" methodology can be applied to a particular small educational context. This paper gathers a list of issues and challenges encountered when using Khan Academy technologies for small private online courses (SPOCs). These issues and challenges include the absence of a single platform that supports all the requirements, the need for integration of different learning platforms, the complexity of the authoring process, the need for an adaptation of gamifcation during the learning process and the adjustment of the learning analytics functionality. In addition, some lessons learned are presented, as well as specifc actions taken in response, where MOOCs do not replace teachers and classrooms for these remedial courses, but improve their effectiveness.This work was partially funded by the EEE project, “Plan Nacional de I+D+i TIN2011-28308-C03-01” and the “eMadrid: Investigación y desarrollo de tecnologías para el e-learning en la Comunidad de Madrid” project (S2009/TIC-1650)”. The last author wishes to acknowledge support from Fundación CajaMadrid to visit Harvard University and MIT in the academic year 2012-13
