***Public and Private School Principle in the United States: A Statistical Profile, 1987-88 to 1993-94*****Table B1.�Standard errors for Table A1: Number and percentage of public and private school           principals, by sex, race-ethnicity, and age:  1987-88, 1990-91, and 1993-94**------------------------------------------------------------------------------------------------------------                                                            All                                    ------------------------------------------------------------------------                                           1987-88                  1990-91                   1993-94                                    ------------------------ ------------------------- ----------------------Principal characteristics              Number    Percent        Number    Percent         Number    PercentTotal                                   768.1      0.00          440.9      0.00           338.0      0.00Sex     Male                               699.6      0.53          732.2      0.63           663.7      0.58     Female                             636.8      0.53          656.0      0.63           601.9      0.58Race-ethnicity     American Indian/Alaska Native      131.1      0.13           95.4      0.09            74.5      0.07     Asian/Pacific Islander              92.1      0.09          126.8      0.12           118.0      0.11     Black non-Hispanic                 289.7      0.28          325.6      0.32           374.3      0.36     White non-Hispanic                 768.3      0.35          582.2      0.44           625.0      0.44     Hispanic                           232.0      0.22          284.6      0.27           264.8      0.25Total minority                          373.8      0.35          455.7      0.44           446.5      0.44Age     Under 35                           296.2      0.28          348.1      0.34           288.6      0.27     35-39                              529.8      0.46          489.0      0.47           330.3      0.31     40-44                              517.4      0.46          606.0      0.59           496.7      0.46     45-49                              461.2      0.46          580.2      0.55           468.7      0.45     50-54                              366.8      0.35          528.0      0.52           524.7      0.51     55 or over                         409.8      0.40          505.4      0.48           476.4      0.44Average age                               0.1                      0.1                       0.1------------------------------------------------------------------------------------------------------------**Table B1.�Standard errors for Table A1: Number and percentage of public and private school           principals, by sex, race-ethnicity, and age:  1987-88, 1990-91, and 1993-94           (continued)**-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------                                                            Public                                                                        Private                                    ------------------------------------------------------------------------------ ------------------------------------------------------------------                                            1987-88                  1990-91                   1993-94                    1987-88                 1990-91                 1993-94                                    ------------------------ ------------------------- --------------------------- ----------------------- ----------------------- ------------------Principal characteristics              Number    Percent        Number    Percent         Number    Percent         Number  Percent         Number  Percent         Number  Percent-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Total                                   295.1      0.00          216.9      0.00           235.2      0.00           715.4    0.00           390.3    0.00           197.7    0.00Sex     Male                               457.7      0.51          551.3      0.69           612.9      0.70           557.7    1.44           382.4    1.16           301.4    1.10     Female                             407.8      0.51          559.5      0.69           542.4      0.70           451.8    1.44           283.3    1.16           282.8    1.10Race-ethnicity     American Indian/Alaska Native        119      0.15           85.7      0.11            67.3      0.08            46.2    0.18            42.8    0.18            36.6    0.15     Asian/Pacific Islander              50.9      0.06          101.6      0.13           108.6      0.14            75.6    0.29            48.9    0.20            42.5    0.17     Black non-Hispanic                   236      0.30          294.6      0.37           350.9      0.45             134    0.54           123.9    0.52             124    0.50     White non-Hispanic                   393      0.36            430      0.50           539.5      0.54           693.7    0.89           390.7    0.65           269.6    0.70     Hispanic                           139.8      0.18          265.9      0.34           258.2      0.33           168.2    0.65            75.6    0.30              91    0.37Total minority                          277.4      0.36            395      0.50           413.2      0.54           232.6    0.89           158.6    0.65           173.9    0.70Age     Under 35                           205.6      0.26          250.3      0.32             142      0.18           257.7    0.98           231.7    0.94           229.3    0.90     35-39                                327      0.41          387.9      0.48           275.3      0.34           336.7    1.05           222.2    0.92           213.2    0.87     40-44                              364.6      0.45          554.1      0.71           454.8      0.56           373.5    1.31           277.5    1.07           230.6    0.88     45-49                              375.5      0.48          544.3      0.66             418      0.53           266.3    0.99           223.4    0.89           223.9    0.90     50-54                              335.1      0.43          431.6      0.55           470.9      0.60           207.8    0.71           234.2    0.98           199.9    0.80     55 or over                         335.1      0.43          395.4      0.51             403      0.50           210.1    0.86           219.3    0.87           249.2    0.97Average age                               0.1                      0.1                       0.1                       0.2                     0.2                     0.2-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------                                    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).