Pays ou région | Sri Lanka |
Année | 2013 |
Producteur(s) | National Educational Research and Evaluation Centre - University of Colombo |
Métadonnées |
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Créé le
13 mars 2015
Dernière modification
13 mars 2015
Echantillonnage
Méthode d'échantillonnage
The sampling frame is based on the Ministry of Education's 2010 school database.
Schools are selected using multi-stage sampling.
Classrooms are selected using simple random sampling.
Students are selected using simple random sampling.