Math scores*

Average grade level performance for 3rd graders on math standardized tests

The 2020 County Health Rankings used data from 2016 for this measure.

Reason for Including

Reading scores measures performance outcomes on math tests for 3rd grade students in a county compared with the national average for 3rd graders. Many states implement standardized tests to measure the academic achievement of districts, schools, and students. Standardized test scores are often reported by state departments of education. The average academic performance of students in a given school district can be considered to reflect the total set of (both in- and out of-school) educational opportunities and resources available to children in that community.[1] School achievement is a predictor of future academic outcomes.[2] The literature indicates that strong academic performance at all grade levels is associated with better health outcomes such as life expectancy through increased educational opportunities, employment, and life satisfaction.[3-7]

Key Measure Methods

Math Scores is an Average

Math scores is the average grade level performance in the county for 3rd graders on math standardized tests. For example, a score of 3.5 indicates that the 3rd graders are performing half a grade level better than expected for 3rd graders. 

Math Scores is Modeled

Data come from the Stanford Education Data Archive program, which uses data from EDFacts and state sources; estimates are produced using complex statistical modeling. Using modeling allows the generation of more stable estimates for places with small populations or survey counts and for comparability across states. For more technical information on test score estimates please see their methodology: Fahle, E. M., Shear, B. R., Kalogrides, D., Reardon, S. F., DiSalvo, R., & Ho, A. D. (2017). Stanford Education Data Archive: Technical Documentation (Version 2.0). Retrieved from

Measure Limitations

This measure is not available in all states. Please see our FAQ for more information about this.

Can This Measure Be Used to Track Progress


Data Source

Years of Data Used


Stanford Education Data Archive

Digging Deeper
Age 1
Gender 1
Race 1
Education 0
Income 0
Subcounty Area 1

Using the Stanford Education Data Archive data is available by grade level, gender, race, and school district. 


[1] Fahle EM, & Reardon SF. How much do test scores vary among school districts? New estimates using population data, 2009-2013. Stanford Center for Education Policy Analysis Working paper No. 17-02.

[2] Jordan E, McKenzie SC, Ritter GW. Long-term outcomes of low-achieving third grade readers. October 10, 2018.

[3] Hernandez DJ. Double Jeopardy: How third-grade reading skills and poverty influence high school graduation. The Annie E. Casey Foundation. April 2011.

[4] French MT, Homer JF, Popovici I, Robins PK. What you do in high school matters: High school GPA, educational attainment, and labor market earnings as a young adult. East. Econ. J. 2015;41:370-386.

[5] Kaplan RM, Spittel ML, & Zeno TL. Educational Attainment and Life Expectancy. Policy Insights from Behavioral and Brain Science. October 1, 2014.

[6] Kern ML & Friedman HS. Early Educational Milestones as Predictors of Lifelong Academic Achievement, Midlife Adjustment, and Longevity. J Appl Dev Psychol. Jul 21, 2009.

[7] Ma J, Pender M, Welch M. Education pays 2016. The College Board. 2016.

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