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Table 1 Descriptive statistics

From: Early school entrance and middle-run academic performance in Mexico: evidence for 15-year-old students from the PISA test

  Obs. Min. Max. Mean
All Regular Early Diff.
Early (d) 6199 0 1 0.312    
Repeat (d) 6199 0 1 0.108 0.082 0.166 ***
Male (d) 6199 0 1 0.474 0.473 0.478  
Village (up to 3 k habs.) 6167 0 1 0.155 0.155 0.154  
Small town (3 k–15 k habs.) 6167 0 1 0.113 0.106 0.129 ***
Town (15 k–100 k habs.) 6167 0 1 0.186 0.189 0.180  
City (100 k–1 m habs.) 6167 0 1 0.294 0.291 0.300  
Large city (1 m+ habs.) 6167 0 1 0.252 0.258 0.237  
Mother educ. (elementary d.o.) 6181 0 1 0.063 0.065 0.057  
Mother educ. (middle d.o.) 6181 0 1 0.152 0.154 0.148  
Mother educ. (highschool d.o.) 6181 0 1 0.302 0.297 0.312  
Mother educ. (technical. d.o.) 6181 0 1 0.017 0.017 0.017  
Mother educ. (highschool) 6181 0 1 0.163 0.161 0.167  
Mother educ. (technical) 6181 0 1 0.110 0.105 0.121 *
Mother educ. (college) 6181 0 1 0.193 0.200 0.178 *
Mother does not work (d) 6199 0 1 0.353 0.345 0.370 *
Computer at home (d) 6174 0 1 0.582 0.582 0.563 *
Internet at home (d) 6177 0 1 0.688 0.688 0.688  
Private school (d) 6167 0 1 0.127 0.135 0.111 **
Computers/student 6094 0 3.5 0.260 0.265 0.249 *
Teachers with masters (%) 6077 0 1 0.226 0.228 0.222  
Students/teacher 6163 2.3 100 33.62 33.38 34.13  
Class size 6125 13 53 41.92 41.71 42.36  
Shortage of material (i) 6134 − 1.42 2.96 0.495 0.463 0.568 ***
Shortage of staff (i) 6109 − 1.46 4.04 − 0.004 − 0.026 0.046 *
Large school (d) 6199 0 1 0.769 0.762 0.785  
Medium school (d) 6199 0 1 0.100 0.105 0.089 *
Small school (d) 6199 0 1 0.131 0.133 0.127  
  1. All and by regular and early students
  2. Difference: ***.-99% significance, **.-95% significance, *.-90% significance
  3. (d).- dummie variable; (%).- percentage variable; (i) index variable