As the use of flipped learning spreads throughout educational disciplines, TESOL educators need to consider its potential for our field. This article, based on a computer-aided language learning (CALL) interest session at TESOL 2015, first looks at how best to describe and define flipped learning and examines the factors needed to make it effective in promoting language acquisition in a classroom setting. Next, the authors discuss the role of assessment and how flipped learning provides opportunities for increased informal assessment measures. Then, a flipped learning project is presented as an example of how flipped learning can take shape using project-based learning in an intensive English program (IEP) course. The article concludes with a consideration of both the benefits and the challenges pertaining to this approach for TESOL.