2 posts April 30, 2020 The Duolingo English Test: AI-driven language assessment Burr Settles and Geoffrey T. LaFlair August 14, 2015 Duolingo English Test, Africa, IELTS, and CEFR Burr Settles
April 30, 2020 The Duolingo English Test: AI-driven language assessment Burr Settles and Geoffrey T. LaFlair
