Standard errors for table 1: Number and percentage distribution of public and private K–12 teachers by their workforce categories and employment background: 1987–88, 1990–91, 1993–94, and 1999

Table SA4

Standard errors for table 1: Number and percentage distribution of public and private K–12 teachers by their workforce categories and employment background: 1987–88, 1990–91, 1993–94, and 1999–2000

	1987–88		1990–91		1993–94		1999–2000
Workforce categories and employment background	Number	Percent	Number	Percent	Number	Percent	Number	Percent

Total workforce at the start of the year	14,900	†	22,400	†	23,000	†	23,700	†
Continuing teachers	13,900	0.2	21,200	0.2	20,900	0.2	22,600	0.3
New hires	4,800	0.2	7,500	0.2	5,800	0.2	9,200	0.3
Transfers at the start of the year	4,300	0.2	5,600	0.2	4,800	0.1	7,400	0.2
New entrants	3,500	0.1	4,900	0.2	4,300	0.1	6,800	0.2
Returning teachers	2,200	0.1	2,500	0.1	2,100	0.1	4,000	0.1
Delayed entrants	1,600	0.1	2,800	0.1	2,600	0.1	3,500	0.1
Recent graduates	1,700	0.1	2,500	0.1	2,600	0.1	3,300	0.1

† Not applicable.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Schools and Staffing Survey (SASS), “Public Teacher Questionnaire” and “Private Teacher Questionnaire,” 1987–88; “Public Teacher Questionnaire” and “Private Teacher Questionnaire,” 1990–91; “Public Teacher Questionnaire” and “Private Teacher Questionnaire,” 1993–94; “Public Teacher Questionnaire,” “Charter Teacher Questionnaire,” and “Private Teacher Questionnaire,” 1999–2000.