for students from disadvantaged backgrounds in australia canada and new zealand this performance penalty was higher than the oecd average disadvantaged students in australia canada and new zealand were also more likely to arrive late for school than disadvantaged students in other countries in new zealand more than one in two socioeconomically disadvantaged students reported having arrived late for school at least once in the two weeks before the pisa test in some countries disadvantaged students may have no private means of transportation to school and may need to use public transport or be responsible for getting themselves to school even at a young age