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Source: Alexander, K.L., Entwisle, D.R., and Olson, L.S. “Schools, Achievement and Inequality: A Seasonal Perspective.” Educational Evaluation and
Policy Analysis, 23(2), 171-191 (2001)
Policy Analysis, 23(2), 171-191 (2001)
So What?
1) Researchers at Johns Hopkins University looked at a group of 678 Baltimore, Maryland students' math test scores at the
beginning and end of each school year and followed them from 1st through 5th grade.
2) The difference between scores at the beginning and end of the school year were gains attributed to the school year. Likewise,
the difference between scores at the beginning and end of the summer (same as end of one school year and the beginning of
the next school year) were gains attributed to factors outside of school.
3) Learning was measured using the standardized California Achievement Test -Math Concepts and Applications (CAT-M).
4) Socio-economic status (SES) was classified based on a composite of mother's and father's educational levels, mother's and
father's occupational status, and student's receipt of reduced-price school meals; an indicator of income level relative to family
size.
5) Note how each summer high-SES student scores improve, while those of mid- and low-SES student scores decline until the
summer between 3rd and 4th grade for mid-SES students and until the summer between 4th and 5th grade for low-SES students.
6) Maybe 1st through 3rd graders and their parents could use summer math study guides to maintain or extend school-year
learning.
7) See this data graphed as cumulative gains and losses through grades 1 through 5.
8) See also the results for California Achievement Test -Reading Comprehension (CAT-V), where the summer improvement
effect is even larger.
1) Researchers at Johns Hopkins University looked at a group of 678 Baltimore, Maryland students' math test scores at the
beginning and end of each school year and followed them from 1st through 5th grade.
2) The difference between scores at the beginning and end of the school year were gains attributed to the school year. Likewise,
the difference between scores at the beginning and end of the summer (same as end of one school year and the beginning of
the next school year) were gains attributed to factors outside of school.
3) Learning was measured using the standardized California Achievement Test -Math Concepts and Applications (CAT-M).
4) Socio-economic status (SES) was classified based on a composite of mother's and father's educational levels, mother's and
father's occupational status, and student's receipt of reduced-price school meals; an indicator of income level relative to family
size.
5) Note how each summer high-SES student scores improve, while those of mid- and low-SES student scores decline until the
summer between 3rd and 4th grade for mid-SES students and until the summer between 4th and 5th grade for low-SES students.
6) Maybe 1st through 3rd graders and their parents could use summer math study guides to maintain or extend school-year
learning.
7) See this data graphed as cumulative gains and losses through grades 1 through 5.
8) See also the results for California Achievement Test -Reading Comprehension (CAT-V), where the summer improvement
effect is even larger.
Math Learning Seasonality vs. Socio-Economic Status
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