This study examined equity through the differences average scale scores on the NAEP 2015 12th-grade mathematics test by parents' socioeconomic status (SES) and students' use of graphing calculators in the classroom and while taking the NAEP 2015 assessment. Data were national public composite mathematics 12-grade 2015 NAEP assessment scores. The NAEP Data Explorer was used for the secondary analysis. Score range for the 12th-grade mathematics assessment is 0-300. The students' National School Lunch (NSLP) eligibility [SLUNCH3] was selected to serve as a proxy measure of parents' socioeconomic status (SES). Two questions were selected from "student factors": (1) How often do you use these different kinds of calculators in math class? Graphing. Options: never use; sometimes not often; usually use (answered by students). [M817601]; (2) Kind of calculator used for test? Options: no calculator use; scientific non-graphing calculator; NAEP provided calculator; graphing calculator (answered by students). [M830201].