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Percentage distribution of public schools by length of school week and, percentage distribution of schools with fewer than 5 days per week, by selected school characteristics: 2017–18

  Length of school week   Percentage distribution of schools with fewer than 5 days per week  
Selected school characteristic Fewer than 5 days   5 days   More than 5 days  
All public schools 1.9   97.5   0.6   100.0  
                 
Region                
Northeast ‡   99.1   0.9 ! ‡  
Midwest 1.4   98.1   0.6 ! 17.4  
South 0.8   98.6   0.6   15.2  
West 5.3   94.4   0.3 ! 66.8  
                 
School classification                
Traditional public 1.8   97.7   0.5   85.5  
Charter school 3.5   95.8   0.7 ! 14.5  
                 
Community type                
City 0.6   98.7   0.7 ! 8.3  
Suburban 0.8 ! 98.8   0.4   13.6  
Town 2.2   97.4   ‡   15.2  
Rural 4.6   94.8   0.6   62.8  
                 
School level                
Primary 0.9   98.6   0.5   26.2  
Middle 0.5 ! 98.9   0.6 ! 4.4 !
High 3.3   96.0   0.7 ! 34.4  
Combined 7.0   92.3   0.7 ! 35.0  
                 
Student enrollment                
Less than 200 7.1   91.9   0.9 ! 54.6  
200–749 1.1   98.3   0.6   38.8  
750 or more 0.6 ! 99.1   0.3 ! 6.5 !
                 
Percent of K–12 students who were
approved for free or reduced–price
lunches		                
School did not participate 5.6   93.9   ‡   13.2  
0–34 0.9   98.5   0.5 ! 11.3  
35–49 1.8   97.6   0.6 ! 15.3  
50–74 2.4   96.8   0.8   28.1  
75 or more 1.8   97.8   0.4 ! 32.1  
                 
School Type                
Regular 1.6   97.8   0.6   74.2  
Special program emphasis ‡   99.4   #   ‡  
Special education ‡   99.1   #   ‡  
Career/technical/vocational ‡   97.1   ‡   ‡  
Alternative/other 7.3   91.8   ‡   23  
! Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 percent and 50 percent (i.e., the standard error is at least 30 percent and less than 50 percent of the estimate).
‡ Reporting standards not met. The coefficient of variation (CV) for this estimate is 50 percent or greater (i.e., the standard error is 50 percent or more of the estimate).
SOURCE: U.S. Department of Education, National Center for Education Statistics, National Teacher and Principal Survey (NTPS), "Preliminary Public School Restricted–Use Data Files," 2017–18.
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