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Public and Private School Principle in the United States: A Statistical Profile, 1987-88 to 1993-94
Table B6.-Standard errors for Table A6:  Percentage of public and private school principals 
          by school level, by sex, race-ethnicity, and age:  1987-88, 1990-91, and 1993-94
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                                                                                          School level
                                        -----------------------------------------------------------------------------------------------------------
                                                    Elementary                             Secondary                             Combined
                                          -----------------------------         -----------------------------         -----------------------------
Principal characteristics                 1987-88    1990-91    1993-94         1987-88    1990-91    1993-94         1987-88    1990-91    1993-94
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PUBLIC
Sex
 Male                                        0.74       0.86       0.99            0.54       0.79       0.66            1.53       1.86       1.85
 Female                                      0.74       0.86       0.99            0.54       0.79       0.66            1.53       1.86       1.85
Race-ethnicity
 American Indian/Alaska Native               0.17       0.12       0.12            0.25       0.27       0.14            0.60       0.40       0.39
 Asian/Pacific Islander                      0.09       0.19       0.20            0.14       0.10       0.09            0.13       0.12       0.18
 Black non-Hispanic                          0.46       0.50       0.58            0.38       0.45       0.38            1.03       1.02       0.65
 White non-Hispanic                          0.44       0.66       0.79            0.53       0.58       0.57            1.03       1.41       1.04
 Hispanic                                    0.24       0.43       0.48            0.32       0.33       0.39            0.28       0.74       0.75
Total minority                               0.44       0.66       0.79            0.53       0.58       0.57            1.03       1.41       1.04
Age
 Under 35                                    0.41       0.43       0.23            0.34       0.29       0.26            0.79       1.27       0.49
 35-39                                       0.62       0.62       0.49            0.73       0.60       0.44            1.22       1.76       0.60
 40-44                                       0.53       0.95       0.80            1.04       1.00       0.77            1.41       2.02       1.70
 45-49                                       0.67       0.90       0.67            0.72       1.00       0.73            1.15       1.56       3.19
 50-54                                       0.52       0.75       0.76            0.75       0.71       0.74            1.26       2.11       2.93
 55 or over                                  0.56       0.76       0.69            0.68       0.86       0.58            1.13       1.38       1.52
Average age                                  0.11       0.16       0.12            0.13       0.16       0.10            0.23       0.39       0.26
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See footnotes at end of tables.
Table B6.-Standard errors for Table A6:  Percentage of public and private school principals 
          by school level, by sex, race-ethnicity, and age:  1987-88, 1990-91, and 1993-94
          (continued)
---------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                          School level
                                        -----------------------------------------------------------------------------------------------------------
                                                    Elementary                             Secondary                             Combined
                                          -----------------------------         -----------------------------         -----------------------------
Principal characteristics                 1987-88    1990-91    1993-94         1987-88    1990-91    1993-94         1987-88    1990-91    1993-94
---------------------------------------------------------------------------------------------------------------------------------------------------
PRIVATE
Sex
 Male                                        1.75       1.57       1.79            4.07       2.54       2.91            2.79       2.23       2.62
 Female                                      1.75       1.57       1.79            4.07       2.54       2.91            2.79       2.23       2.62
Race-ethnicity
 American Indian/Alaska Native                 -          -          -               -          -          -               -          -          -
 Asian/Pacific Islander                        -          -          -               -          -          -               -          -          -
 Black non-Hispanic                          0.67       0.70       0.82            0.89       0.62       0.58            0.99       0.75       0.62
 White non-Hispanic                          0.88       0.80       1.00            2.98       1.12       0.84            1.59       1.33       1.20
 Hispanic                                    0.52       0.41       0.44            3.08       0.83       0.66            1.06       0.74       0.92
Total minority                               0.88       0.80       1.00            2.98       1.12       0.84            1.59       1.33       1.20
Age
 Under 35                                    1.08       1.22       1.09            2.09       1.00       0.71            2.21       2.07       2.12
 35-39                                       1.36       1.14       1.05            2.56       2.12       2.53            2.34       2.50       2.19
 40-44                                       1.41       1.31       1.13            4.00       2.55       2.30            2.95       2.67       1.98
 45-49                                       1.47       1.17       1.29            2.67       2.48       1.94            2.32       2.10       1.87
 50-54                                       0.99       1.47       0.86            2.41       1.80       3.14            1.74       1.75       1.71
 55 or over                                  1.15       1.31       1.52            3.23       2.08       1.51            2.26       1.48       1.96
Average age                                  0.26       0.36       0.36            0.81       0.50       0.49            0.56       0.49       0.55
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-Too few cases for a reliable estimate
SOURCE:  U.S. Department of Education, , Schools and Staffing Survey: 1987-88 (School Administrator 
Questionnaire), 1990-91 (Public and Private School Administrator Questionnaires), and 1993-94(Public and Private School Principal 
Questionnaires).

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