Kichemy Dorcena, a first-generation student at Berea College in Kentucky, says he chose the Duolingo ... other tests' fixed format,” Zhu says. “Although I've only taken a TOEFL practice ...

He is everywhere. The Duolingo Twitter account recently posted a photo that captured its adorable winged owl in all of his haunting glory. Alongside a shadowy, lurking Duo—yes, that’s his name ...