Autor
Programme for International Student Assessment
18
Organizace pro ekonomickou spolupráci a rozvoj
15
Teaching and Learning International Survey
5
Santiago, Paulo
4
Shewbridge, Claire
3
Nusche, Deborah
2
Centre for Educational Research and Innovation
1
Jensen, Ben
1
Salz, Susanne
1
Schleicher, Andreas, 1964-
1
Toledo Figueroa, Diana
1