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Percentage distribution of teachers in public middle and high schools, by years of teaching experience, main teaching assignment, and selected school characteristics: 2017–18

                 
Main teaching assignment and selected school characteristic Less than
4 years		   4–9 years   10–19 years   20 or
more years		  
  All public school teachers 16.1   21.7   37.0   25.2  
                 
Teaching field and school characteristic                
                 
  Mathematics 16.8   21.6   37.3   24.2  
Percent of students who were non-White                
  0–24 13.4   18.2   40.9   27.5  
  25–49 14.1   22.9   38.5   24.6  
  50–74 19.4   24.1   34.9   21.5  
  75 or more 22.9   23.1   34.4   19.6  
  Data not available ‡   13.7  ! 29.8  ! 52.6  
                 
Percent of K–12 students who were approved
  for free or reduced‑price lunches		                
  0–34 13.7   20.0   39.3   27.0  
  35–49 14.6   21.8   37.8   25.9  
  50–74 16.8   23.4   37.6   22.2  
  75 or more 22.9   21.9   34.0   21.2  
                 
Community type                
  City 19.5   23.6   35.6   21.3  
  Suburban 16.2   20.7   38.3   24.7  
  Town 13.2   21.4   37.1   28.3  
  Rural 16.9   21.0   37.5   24.6  
                 
Region                
  Northeast 13.7   16.6   48.4   21.3  
  Midwest 12.5   18.5   37.7   31.3  
  South 19.1   26.9   32.5   21.5  
  West 19.9   19.2   35.5   25.4  
                 
  Natural sciences 15.7   21.5   39.3   23.4  
Percent of students who were non-White                
  0–24 13.2   22.2   41.4   23.2  
  25–49 12.8   20.8   40.9   25.5  
  50–74 21.6   22.3   33.3   22.8  
  75 or more 18.2   23.3   39.2   19.3  
  Data not available 11.3  ! ‡   43.9   41.0  
                 
Percent of K–12 students who were approved
  for free or reduced‑price lunches		                
  0–34 13.0   18.9   42.3   25.8  
  35–49 12.5   23.4   40.6   23.5  
  50–74 17.0   24.6   38.2   20.3  
  75 or more 21.8   20.6   34.7   22.8  
                 
Community type                
  City 19.0   21.5   37.0   22.5  
  Suburban 12.4   19.2   43.5   24.9  
  Town 19.4   18.3   36.9   25.5  
  Rural 16.4   29.5   34.3   19.8  
                 
Region                
  Northeast 9.8   22.9   43.0   24.3  
  Midwest 14.2   15.2   43.1   27.5  
  South 20.1   23.6   35.3   21.0  
  West 14.6   23.0   39.7   22.7  
                 
  Other1 16.0   21.8   36.6   25.7  
Percent of students who were non-White                
  0–24 12.3   20.6   39.5   27.6  
  25–49 14.5   21.1   36.0   28.4  
  50–74 16.7   25.1   33.5   24.7  
  75 or more 20.6   22.3   36.3   20.7  
  Data not available 23.7   16.1   31.6   28.6  
                 
Percent of K–12 students who were approved
  for free or reduced‑price lunches		                
  0–34 13.3   20.5   38.9   27.3  
  35–49 14.2   21.8   37.9   26.1  
  50–74 15.9   22.4   34.8   26.9  
  75 or more 21.4   23.1   33.8   21.7  
                 
Community type                
  City 18.5   23.3   34.4   23.8  
  Suburban 13.6   21.4   38.8   26.3  
  Town 17.5   22.0   33.9   26.6  
  Rural 16.4   20.3   36.6   26.7  
                 
Region                
  Northeast 11.1   20.3   41.7   26.9  
  Midwest 13.6   20.6   37.4   28.5  
  South 19.4   24.3   33.9   22.4  
  West 16.6   19.4   35.6   28.4  
! 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).
1 Other teachers include those who teach any subject other than mathematics or natural sciences.
NOTE: Detail may not sum to totals because of rounding and because some data are not shown.
SOURCE: U.S. Department of Education, National Center for Education Statistics, National Teacher and Principal Survey (NTPS), "Public School Teacher Data File," 2017–18.

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