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Table H115. Number of grade 9 through 12 public school teachers, average years of teaching experience, and percentage distribution of years of teaching experience, by school type and main teaching assignment: 2008
              Percentage distribution of years of teaching experience  
               
School type and main teaching assignment Number of teachers   Percent of teachers   Average years of teaching experience   Less than
4 years
  4–9
years
  10–14
years
  15 years
or more
 
                             
Total 1,059,500   100.0   14   17.5   27.3   17.0   38.3  
                             
School type1                            
Regular 846,200   87.8   14   17.0   27.3   17.2   38.5  
Career or technical 31,500   3.3   14   16.2   27.6   18.7   37.5  
Other2 86,200   8.9   13   21.2   26.2   15.9   36.8  
                             
Main teaching assignment                            
Career and technical education (CTE), total 147,600   13.9   14   17.5   23.7   16.1   42.7  
Nonoccupational CTE 65,700   6.2   15   15.7   21.7   15.5   47.1  
Occupational education 81,900   7.7   14   18.9   25.3   16.6   39.2  
Agriculture and natural resources 12,000   1.1   14   19.7   19.9   17.7   42.7  
Business 22,400   2.1   14   19.0   26.2   14.5   40.3  
Communications and design 9,300   0.9   13   12.7 ! 30.3   23.9   33.1  
Computer and information sciences 6,400   0.6   15   17.9   25.4   11.4 ! 45.3  
Construction, architecture, and engineering technologies 9,400   0.9   13   18.7   27.6   17.1   36.6  
Consumer, culinary, and public services 5,800   0.6   13   20.9   28.8   10.0 ! 40.3  
Health sciences 4,300   0.4   10   32.3   20.4   24.7   22.6  
Manufacturing 2,900   0.3   13   14.0   29.8 ! 11.7 ! 44.5  
Marketing 3,900   0.4   13   21.8   24.9   18.8 ! 34.5  
Repair and transportation 5,500   0.5   15   16.9 ! 19.9 ! 16.6 ! 46.7  
Academic education 711,300   67.1   13   18.2   28.1   17.0   36.8  
Other3 200,600   18.9   14   15.0   26.9   17.5   40.6  
! Interpret data with caution. Estimate is unstable because the standard error represents more than 30 percent of the estimate.
1 Excludes 9 percent of teachers with unspecified school type.
2 Other school types include special program emphasis schools, special education schools, and alternative/other schools.
3 Other teaching assignments include special education; health education; physical education; military science or Reserve Officers’ Training Corps (ROTC); religious studies, theology, or divinity; and other unspecified teaching assignments.
NOTE: Detail may not sum to totals because of rounding.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Schools and Staffing Survey (SASS), “Public School Teacher Questionnaire,” 2007–08.

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