Figure 2. Percentage of public schools with a written plan for procedures to be performed in selected scenarios: School year 2021–22
Hover, click, and tap to see more for all figures on this page.
Bar | Table
A confidence interval is a range of values that describes the uncertainty surrounding an estimate. Throughout the Condition of Education, confidence intervals are calculated as the estimate +/- the margin of error, based on a 95 percent level of confidence. This means that there is 95 percent certainty that the range includes the true or actual value of the statistic.
Confidence Interval
Bar | Table
Users can select years at irregular intervals. However, as a result, the distance between the data points will not be proportional to the number of years between them.
X
Embed this figure

1 For example, earthquakes or tornadoes.

2 In 2021–22, respondents were asked if they had a “formal plan in place to prepare for and respond to multi-country or worldwide pandemic diseases (such as the coronavirus pandemic, COVID-19).”

3 For example, release of mustard gas, anthrax, smallpox, or radioactive materials.

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. Responses were provided by the principal or the person most knowledgeable about crime and safety issues at the school. Figures are plotted based on unrounded data.

SOURCE: U.S. Department of Education, National Center for Education Statistics, 2021–22 School Survey on Crime and Safety (SSOCS), 2022. See Digest of Education Statistics 2023, table 233.65.