The efficiency of schools in developing countries,analysed through PISA 2012 data

This paper analyses the efficiency of more than 6800 schools in 28 developing countries, by means of a two-stage Data Envelopment Analysis and using data from OECD PISA 2012. The results reveal that the average efficiency of schools is around 70%, meaning that achievement scores can be raised by 30% by employing a more effective use of available resources. Substantial heterogeneity exists both between and within countries; in general, efficiency scores are higher when comparing schools only with those in the same country. Among factors associated with schools' efficiency, the most important are the characteristics of student population (for instance, motivation, truancy, etc.). Therefore, some practices related to accountability, teachers’ involvement and professional development, and extracurricular activities are also positively associated with higher levels of efficiency.