***Public and Private School Principle in the United States: A Statistical Profile, 1987-88 to 1993-94*****Table B19.�Standard errors for Table A19:  Percentage of public and private secondary school            principals who view certain issues as serious problems in their schools, by selected            school characteristics:  1993-94**------------------------------------------------------------------------------------------------------------------------------------------                                                                Five most frequently identified problems in secondary schools                                      ----------------------------------------------------------------------------------------------------                                                          Lack of parent                            Student         Students comeSchool characteristics                     Poverty          involvement      Student apathy       alcohol use    unprepared to learn------------------------------------------------------------------------------------------------------------------------------------------      PUBLIC  Total                                     0.65               0.55               0.48               0.64               0.51  Minority enrollment         Less than 20%                      0.77               0.66               0.56               0.66               0.55         20% to 50%                         1.45               1.65               1.30               1.09               1.58         More than 50%                      2.08               1.53               0.98               1.68               1.46  School size         Less than 150                      2.52               2.07               2.02               1.91               1.83         150 to 499                         1.21               1.12               1.29               1.20               1.42         500 to 749                         1.25               1.19               1.32               1.42               1.06         750 or more                        0.88               0.77               0.71               0.82               0.73  District size         Less than 1,000                    1.66               1.09               1.43               0.86               1.27         1,000-4,999                        1.18               1.16               0.89               1.15               1.10         5,000-9,999                        1.77               0.98               1.15               1.54               0.92         10,000 or more                     1.28               1.10               1.11               1.27               0.82  Community type         Central city                       1.54               1.23               0.88               1.72               1.18         Urban fringe/large town            1.35               1.14               0.96               1.01               0.91         Rural/small town                   0.85               0.79               0.75               0.84               0.83PRIVATE  Total                                     1.48               1.64               3.30               1.63               1.17  Minority enrollment         Less than 20%                      0.20                 �                1.18                 �                  �         20% to 50%                         3.19               4.29                 �                4.02               0.60         More than 50%                      6.92               7.09               16.40              6.72                 �  School size         Less than 150                      2.96               3.66               8.61               3.92               2.98         150 to 499                         2.18               2.11               1.17               1.91                 �         500 to 749                         0.00               0.00               2.85               0.00                 �         750 or more                        0.00               0.00               2.19               0.00               0.00------------------------------------------------------------------------------------------------------------------------------------------� Too few cases for a reliable estimate.NOTE:  Problems listed are the five most frequently identified in secondary schools, in order of frequency.SOURCE:  U.S. Department of Education, National Center for Education Statistics, Schools and Staffing Survey:  1993-94 (Public School Principal, Public School, and Teacher Demand and Shortage Questionnaires).