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. Author manuscript; available in PMC: 2018 Jul 17.
Published in final edited form as: Econ Educ Rev. 2015 Dec 4;50:45–62. doi: 10.1016/j.econedurev.2015.11.004

Table 16.

The effect of one month earlier cutoff on the average and standard deviation of test scores in the common cohort sample

Cutoff Date Observations
(a)4th Grade NAEP
(1)Average Score
Reading 2.056*** 235
(0.516)
Mathematics 1.386*** 236
(0.448)
(2)Standard Deviation
Reading −0.963* 235
(0.518)
Mathematics −0.336* 236
(0.184)
(b)8th Grade NAEP
(1)Average Score
Reading 0.387 235
(0.316)
Mathematics 2.030*** 236
(0.527)
(2)Standard Deviation
Reading −0.083 235
(0.278)
Mathematics −0.201 236
(0.218)

Notes:

*

p<0.1;

**

p<0.05;

***

p<0.01.

Standard errors are in parentheses. Standard errors are clustered by state.

State and time fixed effects are controlled. Sex ratio, average ages of parents at birth, average birth weight, average gestation, the ratios of white parents, the ratios of black parents, average of mother’s years of education for each school cohort by state and school entry year, expenditure per student, average elementary school size, average secondary school size, the number of teachers per pupil, the number of staff per pupil, average teacher’s salary, unemployment rate, average personal income, cohort size, dummy variables indicating cutoff change year and previous year by state and test year are used as regressors.

The following test results are included in the sample. 4th grade reading: 1994, 1998, 2003, 2005, 2007, 2009. 8th grade reading: 1998, 2002, 2007, 2009, 2011, 2013. 4th grade math: 1992, 1996, 2003, 2005, 2007, 2009. 8th grade math: 1996, 2000, 2007, 2009, 2011, 2013.