I'm Joseph, a software engineer at Duolingo measuring learning effectiveness and building robust infrastructure. When not staring at a screen, I enjoy cycling, hiking, running, and exploring new places.
Every year, Duolingo hosts a convention where we share new features and host guest speakers. This year, I presented our recent work on measuring the effectiveness of Duolingo, including our 2020 Efficacy Study.
In this study we found that Duolingo users who completed 5 sections of our French and Spanish courses for English speakers performed as well as university students who completed 4 semesters of university language instruction on reading and listening proficiency tests. Read the blog post or dive into the white paper!
At this joint NCME conference panel with learning scientists from Khan Academy and Digital Promise, we share our approach to measuring learning in a data driven company culture.