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NOTE: To estimate the margin of error, the standard error is scaled based on the desired level of confidence in the estimate. Throughout the Condition of Education, margins of error are produced based on a 95 percent level of confidence. Margin of error is calculated as 1.96*standard error. Respondents were asked about carrying “a weapon such as a gun, knife, or club.” In the question asking students about carrying a weapon at school, “on school property” was not defined for respondents. Figures are plotted based on unrounded data.
SOURCE: Centers for Disease Control and Prevention, Division of Adolescent and School Health, Youth Risk Behavior Surveillance System (YRBSS), 2011 through 2021. See Digest of Education Statistics 2023, table 231.40.
†Not applicable.
! Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.
‡ Reporting standards not met. Either there are too few cases for a reliable estimate or the coefficient of variation (CV) is 50 percent or greater.
1 Students were asked which of the following—“heterosexual (straight),” “gay or lesbian,” “bisexual,” “I am not sure about my sexual identity (questioning),” “I describe my sexual identity in some other way,” or “I do not know what this question is asking.”—best described them. Students who selected “I do not know what this question is asking” are considered to be missing the sexual identity data.
NOTE: To estimate the margin of error, the standard error is scaled based on the desired level of confidence in the estimate. Throughout the Condition of Education, margins of error are produced based on a 95 percent level of confidence. Margin of error is calculated as 1.96*standard error. Respondents were asked about carrying “a weapon such as a gun, knife, or club.” In the question asking students about carrying a weapon at school, “on school property” was not defined for respondents. Race categories exclude persons of Hispanic ethnicity. Figures are plotted based on unrounded data.
SOURCE: Centers for Disease Control and Prevention, Division of Adolescent and School Health, Youth Risk Behavior Surveillance System (YRBSS), 2021. See Digest of Education Statistics 2023, table 231.40.
! Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.
‡Reporting standards not met. Either there are too few cases for a reliable estimate or the coefficient of variation (CV) is 50 percent or greater.
1 Race categories exclude persons of Hispanic ethnicity.
2 Excludes students with missing information about the school characteristic.
NOTE: To estimate the margin of error, the standard error is scaled based on the desired level of confidence in the estimate. Throughout the Condition of Education, margins of error are produced based on a 95 percent level of confidence. Margin of error is calculated as 1.96*standard error. Excludes students who received any homeschooling education during the school year and students who only attended virtual public or private schools. Figures are plotted based on unrounded data.
SOURCE: U.S. Department of Justice, Bureau of Justice Statistics, School Crime Supplement (SCS) to the National Crime Victimization Survey, 2022. See Digest of Education Statistics 2023, table 231.70.
1 For general technical notes related to data analysis, data interpretation, rounding, and other considerations, please refer to the Reader’s Guide.
2 The question on weapon carrying at least 1 day during the previous 30 days asked about these weapon types combined. Separate data on each type of weapon were not collected. For more information, see the questionnaire at https://www.cdc.gov/healthyyouth/data/yrbs/pdf/2021/2021-YRBS-National-HS-Questionnaire.pdf.
3 In the question asking students about carrying a weapon at school, “on school property” was not defined for respondents.
4 In 2021, state-level data on the percentage of students in grades 9–12 who reported carrying a weapon at least 1 day during the previous 30 days on school property were available for 33 states and the District of Columbia (for detailed information by state, see the table on weapon carrying on school property for all locations in the YRBSS Youth Online Data Analysis Tool.
5 The national Youth Risk Behavior Survey (YRBS) is a component of YRBSS. The national YRBS is conducted biennially, typically during the spring (January–June) of odd-numbered years. However, the 2021 national YRBS administration was postponed until fall (September–December) 2021 because of the coronavirus pandemic and the shift to virtual and hybrid school instructional models and ongoing school closures during spring 2021. For more details, see https://www.cdc.gov/mmwr/volumes/72/su/su7201a1.htm?s_cid=su7201a1_w.
6 Students were asked which of the following best described them: “heterosexual (straight),” “gay or lesbian,” “bisexual,” “I am not sure about my sexual identity (questioning),” “I describe my sexual identity in some other way,” or “I do not know what this question is asking.” Students who selected “I do not know what this question is asking” are considered to be missing the sexual identity data and thus excluded from the analyses.
7 U.S. total includes the 50 states and the District of Columbia.