“…2 There has been far less systematic research on these issues in developing countries. Notable exceptions include Araujo et al (2016) who use video recordings coded using the CLASS instrument in kindergarten classrooms in 204 schools in Ecuador, Berlinski and Schady (2015) who report on applications of CLASS in kindergarten classes in Brazil, Chile and Ecuador, Coflan, Hasan, and Raggatz (2018) who report findings CLASS instrument in 36 primary and junior secondary schools in the Guangdong province of China, Azigwe et al (2016) who use both a low-inference and a high-inference observation instrument in 73 primary schools in the Upper East Region of Ghana, Bruns and Luque (2015) who report the findings from implementing the Stallings Observation System (hereafter referred to simply as "Stallings") approach to classroom observations in over 15,000 classrooms across 7 Latin American countries, Chang et al (2014) who use video recording of 200 8 th grade mathematics lessons in 200 classrooms with ex-post expert analysis in Indonesia, Seidman et al (2018) who develop and apply the Teacher Instructional Practices and Processes System (TIPPS) instrument in 197 secondary schools in Uganda, Wolf et al (2018) who apply TIPSS in pre-primary classrooms in Ghana, the SDI surveys mentioned above which to-date have recorded observations for over 69,000 teachers in 10 Sub-Saharan African countries (www.sdindicators.org), and finally the development and application of the Teach instrument in Mozambique, Pakistan, the Philippines, and Uruguay (Molina et al 2018). 3 Fewer still are studies that explicitly compare how different observation instruments perform, with Bruns, De Gregorio and Taut (2016) who compare Stallings and CLASS for 51 teachers in the Santiago Metropolitan region and two adjacent regions in Chile being a rare exception.…”