Private School Universe Survey (PSS) - Standard errors for Average school size, by school level and selected characteristics: United States, 2001

Standard errors for average school size, by school level and selected characteristics: United States, 2001-02 (see the data table)
Selected characteristics	Total	Average number of students
Selected characteristics	Total	Elementary	Secondary	Combined
Total	1.60	1.31	6.49	3.58

NCES typology
Catholic	0.91	0.58	1.69	15.50
Parochial	0.29	0.20	6.26	#
Diocesan	1.90	2.12	#	23.01
Private	9.01	6.73	#	23.84

Other religious	1.57	1.31	4.63	3.99
Conservative Christian	2.25	2.29	11.80	3.52
Affiliated	2.38	1.93	#	12.21
Unaffiliated	2.32	1.98	8.04	5.89

Nonsectarian	2.71	1.84	4.38	6.40
Regular	6.94	3.84	6.04	23.94
Special emphasis	1.74	1.64	4.61	6.11
Special education	2.28	1.52	#	3.26

Program emphasis
Regular elementary/ secondary	2.08	1.38	4.26	5.90
Montessori	1.70	1.28	0.00	8.07
Special program emphasis	5.65	3.33	35.96	10.53
Special education	1.99	3.49	0.09	2.88
Vocational/ technical	‡	‡	‡	‡
Alternative	2.12	4.01	2.62	3.06
Early childhood	2.84	#	†	‡

Size (number of students)
Less than 50	0.32	0.28	0.71	0.65
50-149	0.43	0.44	1.03	0.92
150-299	0.29	0.39	0.76	0.46
300-499	0.31	0.22	0.71	0.88
500-749	0.25	#	#	0.76
750 or more	1.71	4.27	0.32	3.57

Region
Northeast	0.65	0.68	3.70	1.52
Midwest	2.59	2.92	7.72	6.70
South	3.51	2.67	6.11	6.90
West	3.95	2.75	17.29	8.29

Community type
Central city	3.12	1.85	7.64	8.02
Urban fringe/large town	1.83	1.43	8.20	4.16
Rural/small town	1.62	1.70	8.06	3.43
† Not applicable.
# Rounds to zero.
‡ Reporting standards not met.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Private School Universe Survey (PSS), 2001-2002.