摘要：This work discusses the methodological issues related to the design, to the implementation and to the data analysis of a field experiment, part of the project “Piccoli che Valgono” funded by “Fondazione Con i Bambini”, that will take place in some Italian lower secondary schools and aimed to measure the efficacy of peer-learning and peer-assessment. These activities represent zero-cost interventions in education with a high potential for fostering learning and social skills of pupils. There is a fruitful debate on how to design and implement peer-learning activities and on how to make them effective and assessable. After mentioning the literature on peer-learning in both education sciences (interested in how to implement the activities and on their pedagogical principle) and economics (mainly focused on the measurement and the isolation of the effects of peer-learning activities), we describe the experimental protocol and the main methodological issues concerning the measurement of the outcome, the implementation in class and the design.
关键词：Apprendimento Collaborativo;Esperimento sul campo;Valutazione tra pari;STEM
