“…The Biden Administration's American Families Plan, which aims to provide universal preschool to all 3-and 4-year-old children, specifies that this must be accompanied by regular "job-embedded coaching for teachers" (Weiland and 2 For evidence on teacher effects in developed countries see Rivkin, Hanushek, and Kain (2005), Chetty, Friedman, and Rockoff (2014a) and the reviews in Hanushek and Rivkin (2012), Jackson, Rockoff, and Staiger (2014), and Koedel, Mihaly, and Rockoff (2015). For evidence from developing countries see Araujo et al (2016) and Bau and Das (2020). For evidence on long-term effects of teacher quality in the U.S., see Chetty et al (2011) and Chetty, Friedman, and Rockoff (2014b).…”