In addition, they also reported attending free after-school classes taught at the school. Official statistics indicate that only 0.04% of students repeated a year in 2012 (IAC, 2014). According to self-reported data in PISA 2012, about 2% of 15-year-olds had repeated at least a year throughout their schooling, a proportion much smaller than the average across OECD countries (12%) (OECD, 2013a).