This paper examines how the educational principles that are at the core of the MA TESOL program at SIT Graduate Institute were embodied in a stand-alone ten-week fully-online teacher training course taught to English as a Foreign Language (EFL) instructors in India and Bhutan. Through the authors' reflections as the primary instructor and the teaching assistant in the course, student work, and feedback from students, the effectiveness of the first iteration of this course is examined, and lessons learned from the design and delivery of this online course are shared. Unexpected synergies between the content of the course, its educational philosophy and best practices in online learning suggest new directions in online learning.