Grade repetition in PISA-I-Plus: What do students who repeat a class learn in mathematics?

Ehmke, TimoTimoEhmkeDrechsel, BarbaraBarbaraDrechsel0000-0003-1454-3658Carstensen, Claus H.Claus H.Carstensen0000-0002-5736-46952019-09-192016-08-1620081862-5215https://fis.uni-bamberg.de/handle/uniba/40826engGrade repetition in PISA-I-Plus: What do students who repeat a class learn in mathematics?article