***Public and Private School Principle in the United States: A Statistical Profile, 1987-88 to 1993-94*****Table B2.�Standard errors for Table A2:  Percentage of public and private school principals           by geographic region, by sex, race-ethnicity, and age:  1987-88, 1990-91, and           1993-94**------------------------------------------------------------------------------------------------------------------------------------------------------                                                                                           Geographic region                                       ---------------------------------------------------------------------------------------------------------------                                              Northeast                    Midwest                      South                        West                                       ---------------------------- ---------------------------- ---------------------------- ------------------------Principal characteristics               1987-88 1990-91 1993-94      1987-88 1990-91 1993-94      1987-88 1990-91 1993-94      1987-88 1990-91 1993-94PUBLIC  Total number                          125.20   66.90   91.60       164.30  157.40  151.90       146.30  105.10   98.30       158.70   78.40   93.80  Sex    Male                                  0.99    1.89    1.58         1.03    1.33    1.22         0.88    1.03    0.96         1.31    1.27    1.69    Female                                0.99    1.89    1.58         1.03    1.33    1.22         0.88    1.03    0.96         1.31    1.27    1.69  Race-ethnicity    American Indian/Alaska Native         0.35    0.08    0.11         0.27    0.21    0.18         0.15    0.26    0.14         0.34    0.30    0.20    Asian/Pacific Islander                0.10    0.26    0.11           �       �       �          0.08    0.10    0.15         0.31    0.48    0.58    Black non-Hispanic                    0.70    0.74    1.12         0.39    0.53    0.63         0.65    0.70    0.67         0.54    0.72    0.95    White non-Hispanic                    0.78    0.88    1.25         0.45    0.61    0.70         0.68    0.97    0.94         0.88    1.52    1.15    Hispanic                              0.41    0.62    0.55         0.21    0.26    0.25         0.33    0.52    0.66         0.58    1.34    1.04Total minority                            0.78    0.88    1.25         0.45    0.61    0.70         0.68    0.97    0.94         0.88    1.52    1.15  Age    Under 35                              0.43    0.23    0.19         0.63    0.67    0.40         0.40    0.37    0.29         0.64    0.54    0.50    35-39                                 0.90    0.77    0.59         0.65    1.01    0.65         0.90    0.67    0.50         0.92    1.13    0.76    40-44                                 1.06    2.00    1.53         0.85    1.20    1.00         0.88    1.10    1.11         1.18    1.23    1.45    45-49                                 1.10    1.37    1.60         0.96    1.05    1.00         1.00    1.06    1.12         1.15    1.65    1.50    50-54                                 1.03    1.59    1.68         0.97    1.15    1.09         0.71    0.77    1.03         1.12    1.32    1.37    55 or over                            0.99    1.15    1.48         0.97    1.02    0.95         0.86    0.87    0.74         1.29    1.13    1.37  Average age                             0.18    0.25    0.27         0.20    0.23    0.16         0.16    0.14    0.15         0.22    0.22    0.23------------------------------------------------------------------------------------------------------------------------------------------------------See footnotes at end of tables.**Table B2.�Standard errors for Table A2:  Percentage of public and private school principals           by geographic region, by sex, race-ethnicity, and age:  1987-88, 1990-91, and           1993-94(continue)**-------------------------------------------------------------------------------------------------------------------------------------------------------                                                                                           Geographic region                                       ----------------------------------------------------------------------------------------------------------------                                              Northeast                    Midwest                      South                        West                                       ---------------------------- ---------------------------- ---------------------------- -------------------------Principal characteristics               1987-88 1990-91 1993-94      1987-88 1990-91 1993-94      1987-88 1990-91 1993-94      1987-88 1990-91 1993-94PRIVATE  Total number                          381.70  178.70  219.20       353.50  332.70  144.40       482.00  295.00  205.90       266.50  163.50  184.40  Sex    Male                                  3.29    1.82    3.00         2.18    2.29    1.67         3.30    1.91    1.94         3.17    2.92    2.10    Female                                3.29    1.82    3.00         2.18    2.29    1.67         3.30    1.91    1.94         3.17    2.92    2.10  Race-ethnicity    American Indian/Alaska Native           �       �       �            �       �       �            �       �       �            �       �       �    Asian/Pacific Islander                  �       �       �            �       �       �            �       �       �            �       �       �    Black non-Hispanic                    1.48    0.90    0.74         0.59    0.73    0.71         0.82    0.70    0.99         0.90    1.46    1.20    White non-Hispanic                    1.50    1.12    1.00         0.86    0.91    0.80         2.52    1.06    1.07         1.93    2.32    1.62    Hispanic                              0.62    0.61    0.65         0.62    0.46    0.63         2.13    0.76    0.56         1.17    1.14    0.90Total minority                            1.50    1.12    1.00         0.86    0.91    0.80         2.51    1.06    1.07         1.93    2.32    1.62  Age    Under 35                              1.82    1.13    1.93         2.12    2.02    1.36         1.51    1.71    1.63         1.63    1.75    1.65    35-39                                 2.20    1.48    2.14         2.05    1.80    1.38         2.41    2.06    1.42         2.36    2.21    1.97    40-44                                 2.36    1.99    2.10         1.67    2.52    1.46         2.80    1.91    1.46         2.34    1.95    2.02    45-49                                 2.09    1.99    2.27         2.00    2.02    1.46         2.12    1.44    1.72         2.04    1.98    2.23    50-54                                 1.47    1.78    1.44         1.20    2.40    1.36         1.97    1.70    1.40         1.80    1.90    2.24    55 or over                            2.25    1.94    3.03         1.69    1.78    1.23         2.24    1.60    1.73         2.40    2.10    2.44  Average age                             0.68    0.44    0.66         0.38    0.48    0.33         0.52    0.46    0.48         0.51    0.55    0.53------------------------------------------------------------------------------------------------------------------------------------------------------                   �Too few cases for a reliable estimate.SOURCE:  U.S. Department of Education, National Center for Education Statistics, 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).