By listening to its core audience--teachers--ClassDojo's educational software has reached 90% of U.S. schools. Now the real work begins: how to get someone to pay for it.

SAN FRANCISCO — Before launching ClassDojo in 2011, Sam Chaudhary and co-founder Liam Don did their own homework by talking to teachers, parents and students. “The problem that emerged was ...

ClassDojo is a technology-based classroom tool that was designed to help teachers improve classroom behavior and share information on student behavior with parents and administrators.

Their paper, titled “The datafication of discipline: ClassDojo, surveillance and a performative classroom culture” was published last month in the journal Learning, Media, and Technology.

ClassDojo is one of the most popular classroom communication apps in the world. It claims to assist teachers to create happier classrooms and bills itself as “ the simple way to build an amazing ...