“…In line with theoretical predictions within the framework of the education production function (for details, see, e.g., Hanushek, 2020), most studies evaluating the impact of such negative shocks to the amount of in-school instruction found detrimental effects on academic achievement (e.g., Marcotte and Hemelt, 2008;Jaume and Willén, 2019;Kuhfeld et al, 2020;Meyers and Thomasson, 2021;Thompson, 2021). 1 A similar conclusion arises from complementary research that relied on within-student variation in the number of instructional hours across subjects or grades (e.g., Lavy, 2015;Rivkin and Schiman, 2015;Wedel, 2021). Although thanks to technological advances, standard in-person classes can currently be largely substituted by remote instruction, their effectiveness has been often questioned (e.g., Huebener et al, 2020;Bacher-Hicks et al, 2021;Jack et al, 2022).…”