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. 2014 Dec 2;9(12):e113755.
doi: 10.1371/journal.pone.0113755. eCollection 2014.

Why is school closed today? Unplanned K-12 school closures in the United States, 2011-2013

Karen K Wong  1 , Jianrong Shi  1 , Hongjiang Gao  1 , Yenlik A Zheteyeva  1 , Kimberly Lane  2 , Daphne Copeland  1 , Jennifer Hendricks  3 , LaFrancis McMurray  3 , Kellye Sliger  3 , Jeanette J Rainey  1 , Amra Uzicanin  1
Affiliations

Why is school closed today? Unplanned K-12 school closures in the United States, 2011-2013

Karen K Wong et al. PLoS One. .

Abstract

Introduction: We describe characteristics of unplanned school closures (USCs) in the United States over two consecutive academic years during a non-pandemic period to provide context for implementation of school closures during a pandemic.

Methods: From August 1, 2011 through June 30, 2013, daily systematic internet searches were conducted for publicly announced USCs lasting ≥ 1 day. The reason for closure and the closure dates were recorded. Information on school characteristics was obtained from the National Center for Education Statistics.

Results: During the two-year study period, 20,723 USCs were identified affecting 27,066,426 students. Common causes of closure included weather (79%), natural disasters (14%), and problems with school buildings or utilities (4%). Only 771 (4%) USCs lasted ≥ 4 school days. Illness was the cause of 212 (1%) USCs; of these, 126 (59%) were related to respiratory illnesses and showed seasonal variation with peaks in February 2012 and January 2013.

Conclusions: USCs are common events resulting in missed school days for millions of students. Illness causes few USCs compared with weather and natural disasters. Few communities have experience with prolonged closures for illness.

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Conflict of interest statement

Competing Interests: Jianrong Shi is employed by Eagle Medical Services, and Kimberly Lane was employed by Chenega Government Consulting. This does not alter the authors' adherence to all PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Figures

Figure 1
Figure 1. Geographic distribution of public school districts with closure events related to weather, natural disasters, and illness, by year — United States, August 2011–June 2013.
Panels A and B: weather-related closure events; panels C and D: natural disaster-related closure events; panels E and F: illness-related closure events, one event in Alaska not shown.
Figure 2
Figure 2. Number of illness-related school closure events by week and type of illness and national percent of medical provider visits for influenza-like illness — United States, 2011–2013.
*National percent of medical provider visits for influenza-like illness .
See this image and copyright information in PMC

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