This article analyzes a hybrid after-school learning activity for children called "New School" (NS). NS is an inter-institutional, collaborative project based on a partnership between a university and local elementary schools that also involves other social actors and institutions. Using a framework of third generation activity theory, the article illuminates emerging forms of learning in this hybrid activity that attempt to transform traditional school learning. NS seeks to create innovative networks of learning that will expand schooling activity by creating hybrid forms in collaboration with outside communities and organizations. The analysis of the NS intervention explores to what extent the different partners cross boundaries between their activity systems and their willingness to make school changes together as collaborative change agents. Preliminary findings indicate intense contradictions between the involved activity systems. Nevertheless, contradictions also energized collaborative efforts to transform traditional pedagogical practices.