Appendix A. Standard Error Tables

• Table 1a: Standard errors of the percentage of public school principals indicating the extent of certain problems in their school: United States, 1990-91
   
• Table 2a: Standard errors of the percentage of public school principals indicating that certain problems in their school were serious or moderate, by instructional level and location of school: United States, 1990-91
   
• Table 3a: Standard errors of the total and average number of times certain school actions were taken for disruptive behavior or student alcohol and drug use, possession, or sales during the fall 1990 semester, by school characteristics: United States, 1990-91
   
• Table 4a: Standard errors of the total number and the percentage of different students for whom certain school actions were taken for disruptive behavior or student alcohol and drug use, possession, or sales during the fall 1990 semester, by school characteristics: United States, 1990-91
   
• Table 5a: Standard errors of the percentage of public school principals indicating whether their school has certain types of services and procedures sponsored by the school or district specifically for disruptive students: United States, 1990-91
   
• Table 6a: Standard errors of the percentage of public school principals indicating whether their school has certain types of services and procedures sponsored by the school or district specifically for students using alcohol, drugs, or tobacco: United States, 1990-91
   
• Table 7a: Standard errors of the percentage of public school principals indicating the extent to which certain factors limit the ability to maintain order and discipline in their school: United States, 1990-91
   
• Table 8a: Standard errors of the percentage of public school principals indicating that certain factors limit to a great or moderate extent the ability to maintain order and discipline in their school, by instructional level and location of school: United States, 1990-91
   
• Table 9a: Standard errors of the percentage of public school principals indicating specified levels of effectiveness for their school's alcohol, drug, and tobacco prevention programs and policies and general discipline programs and policies in reducing certain problems: United States, 1990-91
   
• Table 10a: Standard errors of the percentage of public school principals indicating that their school's alcohol, drug, and tobacco prevention programs and policies and general discipline programs and policies were not very or not at all effective in reducing certain problems, by instructional level and location of school: United States, 1990-91
   
• Table 11a: Standard errors of the percentage of public school principals indicating that their school offers drug (including alcohol and tobacco) use education in certain ways, by school characteristics: United States, 1990-91
   
• Table 12a: Standard errors of the average number of hours drug (including alcohol and tobacco) use education was taught in each grade during the school year: United States, 1990-91
   
• Table 13a: Standard errors of the average number of hours drug (including alcohol and tobacco) use education was taught in each grade span during the school year, by school characteristics: United States, 1990-91
   
• Table 14a: Standard errors of the percentage of public school principals indicating the extent to which certain organizations in their community provide assistance or educational support to promote safe, disciplined, and drug-free schools: United States, 1990-91
   
• Table 15a: Standard errors of the percentage of public school principals indicating that certain organizations in their community provide assistance or educational support to a great or moderate extent to promote safe, disciplined, and drug-free schools, by instructional level and location of school: United States, 1990-91
   

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