Lucy Portnoff Lucy Portnoff is a data scientist focusing on learning assessment at Duolingo. She graduated from the University of California, Berkeley with an undergraduate degree in Mathematics.
July 31, 2021 Can you reach intermediate reading and listening proficiency with Duolingo? Lucy PortnoffXiangying Jiang Research
Research June 1, 2021 How well does Duolingo teach speaking skills? by Xiangying JiangErin GustafsonCindy Blanco Read More
