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| Selected subject area | Number of classes | Major in subject area | No major in subject area | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total | Certified | Not certified | Total | Certified | Not certified | Total certified | ||||||||
| Mathematics | 676,900 | 70.4 | 62.0 | 8.4 | 29.6 | 15.7 | 14.0 | 77.6 | ||||||
| Science | 562,700 | 81.7 | 71.2 | 10.4 | 18.3 | 11.4 | 6.9 | 82.7 | ||||||
| Biology/life sciences | 245,000 | 72.9 | 57.2 | 15.7 | 27.1 | 17.2 | 10.0 | 74.4 | ||||||
| Physical science | 289,300 | 43.2 | 35.4 | 7.8 | 56.8 | 29.1 | 27.7 | 64.5 | ||||||
| Chemistry | 106,900 | 46.0 | 35.3 | 10.7 | 54.0 | 33.9 | 20.1 | 69.2 | ||||||
| Earth sciences | 53,100 | 23.7 | 18.0 | 5.7 | ! | 76.3 | 22.1 | 54.2 | 40.1 | |||||
| Physics | 43,200 | 46.7 | 31.4 | 15.4 | 53.3 | 28.3 | 25.0 | 59.6 | ||||||
| ! Interpret data with caution. The standard error for this estimate is equal to 30 percent or more of the estimate's value. | ||||||||||||||
| NOTE: High school-level classes include classes taught to students in any of grades 9-12 by teachers in traditional public and public charter schools. Each subject area includes several subfields. Under science, several subfields are examined in detail. These subfields are not inclusive of all subfields in the subject and, therefore, do not add to the broad field total. "Major in subject area" columns include all teachers, regardless of whether the major was held within or outside the school/college of education. Majors in subject area were credited if they are held at the bachelor's degree level or higher. "Certified" columns contain teachers with a regular/probationary certification in-subject and at the secondary level. 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, Schools and Staffing Survey (SASS), "Public School Teacher Data File," 2007–08. | ||||||||||||||
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