How eighth-graders perform on math tests relative to their peers, by socioeconomic status (SES), 2003, 2007, and 2013.

Model I Model II Model III
Without state fixed effects
Variable 2003 2007 2013 2003 2007 2013 2003 2007 2013
Student SES
Eligible for reduced-price lunch -0.260*** -0.264*** -0.296*** -0.203*** -0.198*** -0.228*** -0.145*** -0.137*** -0.170***
(0.013) (0.017) (0.018) (0.013) (0.016) (0.018) (0.013) (0.016) (0.018)
Eligible for free lunch -0.460*** -0.421*** -0.468*** -0.374*** -0.325*** -0.365*** -0.264*** -0.224*** -0.271***
(0.013) (0.011) (0.012) (0.013) (0.010) (0.011) (0.014) (0.009) (0.012)
Parents have some college education 0.266*** 0.261*** 0.248*** 0.254*** 0.248*** 0.234***
(0.011) (0.011) (0.014) (0.011) (0.011) (0.014)
Parents have completed college 0.363*** 0.371*** 0.352*** 0.331*** 0.332*** 0.307***
(0.010) (0.009) (0.011) (0.010) (0.009) (0.010)
Control variables
1. Gender and individual education plan (special education student)
Yes Yes Yes Yes Yes Yes Yes Yes Yes
2. Individual race/ethnicity
Yes Yes Yes Yes Yes Yes Yes Yes Yes
3. Percent of students in school who are black or Hispanic, and percent who are eligible for free or reduced-price lunch
No No No No No No Yes Yes Yes
Adjusted R2 0.317 0.278 0.312 0.343 0.304 0.333 0.356 0.320 0.349
With state fixed effects
Variable 2003 2007 2013 2003 2007 2013 2003 2007 2013
Student SES
Eligible for reduced-price lunch -0.246*** -0.250*** -0.271*** -0.192*** -0.187*** -0.207*** -0.143*** -0.139*** -0.159***
(0.013) (0.017) (0.018) (0.013) (0.016) (0.018) (0.013) (0.016) (0.018)
Eligible for free lunch -0.445*** -0.399*** -0.442*** -0.362*** -0.308*** -0.344*** -0.263*** -0.223*** -0.265***
(0.013) (0.010) (0.011) (0.013) (0.010) (0.011) (0.013) (0.009) (0.012)
Parents have some college education 0.267*** 0.261*** 0.246*** 0.257*** 0.249*** 0.234***
(0.011) (0.011) (0.014) (0.011) (0.011) (0.013)
Parents have completed college 0.354*** 0.359*** 0.343*** 0.327*** 0.327*** 0.304***
(0.010) (0.009) (0.011) (0.010) (0.009) (0.010)
Control variables
1. Gender and individual education plan (special education student)
Yes Yes Yes Yes Yes Yes Yes Yes Yes
2. Individual race/ethnicity
Yes Yes Yes Yes Yes Yes Yes Yes Yes
3. Percent of students in school who are black or Hispanic, and percent who are eligible for free or reduced-price lunch
No No No No No No Yes Yes Yes
Adjusted R2 0.334 0.302 0.336 0.358 0.326 0.356 0.369 0.338 0.368
N 112,542 109,020 118,984 112,542 109,020 118,984 112,542 109,020 118,984

Note: The table shows regression estimates measured in standard deviations—how students who are eligible for reduced-price lunch or free lunch scored relative to peers who are not eligible and how students whose parents have some college or who have completed college scored relative to peers whose parents have no college experience. *** p<0.01

Source: EPI analysis of National Assessment of Educational Progress microdata, 2003, 2007, and 2013

View the underlying data on epi.org.