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Table H116. Average class size for grade 9 through 12 public school teachers and percentage distribution of class size, by school type and main teaching assignment: 2008
      Percentage distribution of class size  
School type and main teaching assignment Average class size   15 or fewer students   16–20 students   21–30 students   More than 30 students  
                     
Total 23   24.3   19.9   41.0   14.8  
                     
School type1                    
Regular 23   21.9   20.4   43.0   14.8  
Career or technical 20   35.4   26.3   27.6   10.7  
Other2 19   46.3   15.0   26.4   12.3  
                     
Main teaching assignment                    
Career and technical education (CTE), total 20   32.8   25.6   32.1   9.5  
Nonoccupational CTE 20   32.0   26.1   33.1   8.8  
Occupational education 20   33.4   25.1   31.3   10.2  
Agriculture and natural resources 18   49.0   21.9   21.7   7.4 !
Business 20   26.6   27.7   39.5   6.2  
Communications and design 25   20.8   21.6   40.4   17.2 !
Computer and information sciences 18   36.5   22.3   32.3    
Construction, architecture, and engineering technologies 18   44.3   26.2   22.4   7.1 !
Consumer, culinary, and public services 22   43.4   21.4   15.3 ! 20.0 !
Health sciences 21   33.1   20.4 ! 30.0   16.5 !
Manufacturing 19   36.8   30.6   21.2 !  
Marketing 22   17.5 ! 24.4   44.1    
Repair and transportation 20   25.8   34.0   32.0   8.3 !
Academic education 24   16.3   21.0   47.9   14.9  
Other3 21   46.4   12.0   23.2   18.4  
! Interpret data with caution. Estimate is unstable because the standard error represents more than 30 percent of the estimate.
‡ Reporting standards not met.
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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