“…Among the family of EPFs, the Potential Pedagogical Function (PPF) proposed by Kaffenberger and Pritchett (2020, 2021) seeks to capture the dynamics of school progression and learning accumulation and how they can interplay with each other and progress in one dimension (schooling) might not translate into the other (learning) 5 . A series of recent empirical findings on how increases in the years of schooling are not translating into a more extensive learning stock in students motivates this insight (for Indonesia ( Beatty et al, 2021 ), for Rwanda ( Crawfurd, 2021 ), for multiple African countries (Pritchett and Sandefur, 2020 and Kaffenberger and Pritchett, 2020a , Kaffenberger and Pritchett, 2020b and Pakistan ( Bau et al, 2021 )). This would explain why transitory shocks to education have persistent effects in the scholastic careers of those who suffered them, as a growing body of literature identifies (see, among others, Andrabi, Daniels and Das, (2021) , Belot and Webbink, (2010), Ichino and Winter-Ebner, (2004) ; Jaume, and Willén, (2019) ; Marcotte and Hemelt, (2008) ; Meng and Zhao, (2021) and Sacerdote, (2012) ).…”