Public and Private School Principle in the United States: A Statistical Profile, 1987-88 to 1993-94
Table B16.-Standard errors for Table A16:  Average years of experience in education for public 
           and private school principals, by selected school and principal characteristics:  
           1987-88, 1990-91, and 1993-94
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                                                       Professional experience in education
                                         ----------------------------------------------------------------
                                            Average years as teachers      Average years as principals
                                         ------------------------------- --------------------------------
School/principal characteristics           1987-88   1990-91   1993-94     1987-88   1990-91   1993-94
---------------------------------------------------------------------------------------------------------
PUBLIC
Total                                        0.06      0.08      0.08        0.09      0.14      0.10
 School level
    Elementary                               0.08      0.12      0.10        0.12      0.17      0.14
    Secondary                                0.13      0.11      0.10        0.16      0.24      0.12
    Combined                                 0.26      0.27      0.42        0.27      0.40      0.28
 School size
    Less than 150                            0.30      0.22      0.26        0.36      0.43      0.32
    150-499                                  0.09      0.14      0.12        0.14      0.19      0.17
    500-749                                  0.12      0.21      0.16        0.17      0.29      0.19
    750 or more                              0.12      0.16      0.14        0.17      0.18      0.19
 Minority enrollment
    Less than 20%                            0.07      0.11      0.10        0.11      0.19      0.16
    20-50%                                   0.18      0.19      0.19        0.22      0.26      0.25
    More than 50%                            0.15      0.22      0.21        0.19      0.22      0.18
 Free-lunch recipients
    Less than 20%                            0.08      0.12      0.14        0.12      0.23      0.21
    20-49%                                   0.10      0.12      0.14        0.16      0.18      0.22
    50% or more                              0.17      0.17      0.19        0.21      0.22      0.20
 District size
    Less than 1,000                          0.16      0.19      0.17        0.24      0.23      0.27
    1,000-4,999                              0.12      0.16      0.14        0.17      0.27      0.23
    5,000-9,999                              0.20      0.23      0.27        0.27      0.36      0.37
    10,000 or more                           0.10      0.17      0.13        0.17      0.18      0.18
 Community type
    Central city                             0.13      0.19      0.19        0.18      0.23      0.24
    Urban fringe/large town                  0.10      0.16      0.16        0.17      0.24      0.22
    Rural/small town                         0.10      0.10      0.10        0.15      0.19      0.17
 Sex
    Male                                     0.06      0.09      0.10        0.10      0.17      0.16
    Female                                   0.15      0.16      0.15        0.17      0.16      0.12
 Race-ethnicity
    American Indian/Alaska Native            0.61      0.63      0.62        0.70      0.80      0.67
    Asian/Pacific Islander                   0.82      0.97      1.01        0.78      0.71      0.61
    Black non-Hispanic                       0.25      0.28      0.25        0.24      0.32      0.21
    White non-Hispanic                       0.06      0.09      0.08        0.09      0.16      0.12
    Hispanic                                 0.41      0.57      0.53        0.37      0.47      0.37
    Total minority                           0.21      0.25      0.21        0.21      0.26      0.16
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Table B16.-Standard errors for Table A16:  Average years of experience in education for public 
           and private school principals, by selected school and principal characteristics:  
           1987-88, 1990-91, and 1993-94(continued)
---------------------------------------------------------------------------------------------------------
                                                       Professional experience in education
                                         ----------------------------------------------------------------
                                            Average years as teachers      Average years as principals
                                         ------------------------------- --------------------------------
School/principal characteristics           1987-88   1990-91   1993-94     1987-88   1990-91   1993-94
---------------------------------------------------------------------------------------------------------
PRIVATE
Total                                        0.23      0.15      0.19        0.18      0.20      0.21
 School level
    Elementary                               0.25      0.27      0.24        0.23      0.30      0.27
    Secondary                                0.66      0.45      0.40        0.57      0.36      0.36
    Combined                                 0.46      0.33      0.33        0.31      0.36      0.34
 School size
    Less than 150                            0.34      0.25      0.32        0.23      0.30      0.36
    150-499                                  0.23      0.21      0.23        0.31      0.30      0.21
    500-749                                  0.45      0.55      0.38        0.71      0.55      0.41
    750 or more                              0.67      0.69      0.41        0.77      0.79      0.40
 Minority enrollment
    Less than 20%                            0.25      0.22      0.26        0.22      0.24      0.30
    20-50%                                   0.65      0.47      0.41        0.59      0.51      0.42
    More than 50%                            0.37      0.47      0.46        0.41      0.47      0.41
 Sex
    Male                                     0.26      0.22      0.21        0.26      0.29      0.26
    Female                                   0.26      0.20      0.26        0.21      0.26      0.27
 Race-ethnicity
    American Indian/Alaska Native            2.51      3.83      2.87        2.60      3.37      2.96
    Asian/Pacific Islander                   1.45      1.64      1.45        1.24      2.08      2.86
    Black non-Hispanic                       0.97      1.92      0.81        0.72      0.79      1.04
    White non-Hispanic                       0.24      0.17      0.18        0.20      0.18      0.22
    Hispanic                                 1.30      0.77      0.83        1.26      1.01      1.43
    Total minority                           0.69      1.00      0.60        0.64      0.70      0.75
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SOURCE:  U.S. Department of Education, , Schools and Staffing 
Survey:  1987-88 (School Administrator, Public and Private School, and Teacher Demand and Shortage 
Questionnaires), 1990-91 (Public and Private School Administrator, Public and Private School, and 
Teacher Demand and Shortage Questionnaires), and 1993-94 (Public and Private School Principal, Public 
and Private School, and Teacher Demand and Shortage Questionnaires).

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