this indicator casts a wide net to measure equity as it is meant to be applied to all other sdg indicators with available data and measures equity over a range of dimensions such as gender socioeconomic status and location in particular it enables the same indicator to be analysed across multiple equity dimensions for example applying global indicator to global indicator shows that students ability to perform at least at pisa level in mathematics is relatively weakly associated to their gender but remains strongly determined by the location of students schools rural or urban in the majority of oecd and partner countries and by socioeconomic status as measured by the pisa index of economic social and cultural status escs in all oecd and partner countries figure for example measuring the gender parity index associated with sdg indicators confirms that students gender does not influence children s participation in education one year before the primary entry age sdg in all oecd countries and is weakly associated with the ability of yearold students to perform at least at pisa level in mathematics sdg