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Percentage of private school students in middle grade and high school departmentalized public school classes taught by a teacher certified in the subject area and percentage distribution of those students, by the teacher's certification and major status in selected subject areas: 2011–12

Level and selected subject area Taught by teacher certified in subject area   Taught by teachers with various certification and major statuses in subject area  
Both certification and major   Certification only   Major only   Neither major nor certification
Middle grade students in grades 6–8                    
English 30.0   18.9   11.1   26.8   43.2  
Mathematics 47.2   24.2   22.9   12.5   40.4  
Science 19.3   14.4   4.8 ! 20.9   59.8  
Social science 26.1 ! 15.8 ! 10.3 ! 29.8   44.1  
General elementary education       60.7    
                     
High school students in grades 9–12                    
English 36.4   31.1   5.4 ! 42.3   21.2  
Mathematics 43.9   36.5   7.4 ! 37.5   18.6  
Science  46.1   41.9   4.2 ! 39.4   14.5  
Social science 39.4   34.2   5.2 ! 38.3   22.3  
! 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. 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).
NOTE: Middle grade includes any classes taught to students in any of grades 6–8. High school includes classes taught to students in any of grades 9–12. Majors are included regardless of whether they are held at the bachelor's degree level or higher. A certification is credited if it is a regular or standard state certificate or a probationary in-subject certification and in any of grades 6–8 (for middle grades) or at the secondary level (for high grades).
SOURCE: U.S. Department of Education, National Center for Education Statistics, Schools and Staffing Survey (SASS), "Private School Teacher Data File," 2011–12.