Science Literacy: School Poverty Indicator

Average Scores

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Table S5. Average scores of U.S. 15-year-old public school students on PISA science literacy scale, by percentage of students in enrolled schools eligible for free or reduced-price lunch, based on principals' reports: 2012
Percent of students eligible for free or reduced-price lunch Average score s.e.
U.S. average 497   3.8
Less than 10 percent 556 * 7.0
10 to 24.9 percent 528 * 6.5
25 to 49.9 percent 523 * 5.6
50 to 74.9 percent 483 * 5.0
75 percent or more 442 * 8.1
OECD average 501   0.5
* p<.05. Significantly different from both the U.S. and OECD averages at the05 level of statistical significance.
NOTE: Scores are reported on a scale from 0 to 1,000. The National School Lunch Program provides free or reduced-price lunch for students meeting certain income guidelines. The percentage of students receiving such lunch is an indicator of the socioeconomic level of families served by the school. Data in this table are based on principals' responses to a question in the school questionnaire that asked the approximate percentage of eligible students in the school during the previous school year. The OECD average is the average of the national percentages of the OECD member countries, with each country weighted equally. Standard error is noted by s.e. Free or reduced-price lunch data are for public schools only.
SOURCE: Organization for Economic Cooperation and Development (OECD), Program for International Student Assessment (PISA), 2012.