For those who are wondering what oppia is,
Oppia is a web-based tool for creating interactive online activities that enable students to learn by doing. Oppia aims to capture and generalize the one-on-one “conversations” that a student has with a teacher, so that other students can benefit from them.
Currently, oppia is written using webapp2 and runs on Google App Engine only. The goal is to port it to django, so that it can run on more number of platforms and hopefully be used for training missions at openhatch