Table 118.

Percentage of public schools with permanent and portable (temporary) buildings and with environmental factors that interfere with instruction in classrooms, by selected school characteristics, type of factor, and extent of interference: 2005

[Standard errors appear in parentheses]
Type of environmental factor and extent of interference with ability to deliver classroom instruction	All public schools1			Instructional level						Size of school enrollment									Percent of students eligible for free or reduced-price lunch
				Elementary			Secondary/ combined			Less than 350			350 to 699			700 or more			Less than 35 percent			35 to 49 percent			50 to 74 percent			75 percent or more
1	2			3			4			5			6			7			8			9			10			11
Estimated number of schools	80,910		(540)	61,590		(669)	19,320		(312)	27,300		(1,039)	32,710		(1,223)	20,900		(695)	32,880		(1,231)	13,400		(1,078)	18,620		(1,244)	16,010		(1,002)
Estimated enrollment (in thousands)	46,003		(457)	29,786		(457)	16,217		(195)	5,947		(331)	16,208		(605)	23,849		(699)	20,668		(721)	6,982		(531)	9,492		(721)	8,861		(670)
	Percent of schools
With permanent buildings	99		(0.4)	99		(0.5)	99		(0.5)	99		(0.5)	99		(0.6)	99		(0.5)	99		(0.5)	100		(†)	99		(0.7)	98		(1.2)
With portable (temporary) buildings	37		(1.9)	40		(2.5)	29		(1.9)	27		(3.1)	36		(2.9)	52		(2.8)	31		(2.9)	35		(4.6)	42		(3.3)	46		(3.9)
With portable classroom buildings	33		(1.7)	35		(2.1)	28		(1.9)	21		(2.6)	33		(2.7)	49		(2.9)	27		(2.7)	31		(4.4)	38		(3.0)	43		(3.9)
With environmental factors that inter-      fere with instruction to a moderate      or major extent
In permanent buildings2
Lighting, artificial	6		(0.9)	6		(1.1)	5		(1.0)	5	!	(2.0)	6		(1.4)	6		(1.4)	4	!	(1.2)	‡		(†)	8		(2.0)	8		(2.0)
Lighting, natural	6		(0.8)	5		(1.0)	7		(1.1)	6		(1.6)	6		(1.5)	4		(0.8)	6		(1.3)	4	!	(1.8)	8		(2.3)	4	!	(1.4)
Heating	12		(1.3)	12		(1.5)	13		(1.8)	14		(2.4)	11		(1.9)	12		(2.0)	13		(2.1)	9		(2.4)	12		(2.7)	14		(2.2)
Air conditioning	16		(1.6)	16		(2.0)	17		(2.0)	16		(2.6)	16		(2.6)	17		(2.0)	19		(2.8)	11		(3.2)	15		(2.7)	16		(2.5)
Ventilation	12		(1.2)	11		(1.5)	12		(1.6)	11		(2.1)	12		(2.1)	12		(1.8)	12		(1.7)	10	!	(3.4)	12		(2.8)	13		(2.6)
Indoor air quality	9		(1.2)	9		(1.5)	9		(1.4)	8		(1.7)	11		(1.9)	9		(1.6)	10		(1.7)	6	!	(2.4)	10		(2.7)	10		(2.7)
Acoustics or noise control	12		(1.1)	12		(1.4)	12		(1.5)	12		(2.3)	13		(2.0)	12		(1.6)	8		(1.3)	10		(2.8)	20		(3.3)	14		(2.9)
Physical condition of buildings	10		(1.2)	10		(1.5)	12		(1.4)	10		(2.1)	11		(1.8)	10		(1.7)	9		(1.7)	7	!	(2.5)	14		(3.1)	13		(2.3)
Size or configuration of rooms	13		(1.1)	13		(1.4)	13		(1.2)	14		(2.3)	12		(2.0)	13		(1.7)	14		(1.9)	8	!	(2.5)	14		(2.9)	12		(2.2)
In portable buildings3
Lighting, artificial	8		(1.5)	8		(1.9)	5	!	(1.9)	11	!	(4.5)	‡		(†)	10		(2.7)	‡		(†)	#		(†)	12	!	(4.3)	11	!	(3.5)
Lighting, natural	9		(1.8)	9		(2.2)	9		(2.4)	11	!	(4.2)	‡		(†)	12		(2.8)	7	!	(2.8)	‡		(†)	14	!	(4.5)	11	!	(3.4)
Heating	9		(1.7)	9		(2.0)	9		(2.4)	11	!	(4.5)	6	!	(2.3)	12		(2.7)	9	!	(3.1)	‡		(†)	10	!	(3.5)	10	!	(3.6)
Air conditioning	11		(2.0)	11		(2.3)	11		(2.6)	15	!	(5.3)	6	!	(2.3)	14		(3.1)	8	!	(3.0)	10	!	(4.5)	14	!	(4.6)	13		(3.8)
Ventilation	14		(1.8)	14		(2.1)	12		(2.7)	20		(5.8)	8	!	(2.4)	16		(3.3)	10	!	(3.2)	8	!	(3.7)	19		(5.0)	17		(3.9)
Indoor air quality	12		(1.9)	11		(2.3)	13		(2.8)	12	!	(4.2)	9	!	(2.9)	14		(3.2)	8	!	(2.8)	‡		(†)	16		(4.6)	14		(3.4)
Acoustics or noise control	18		(2.1)	18		(2.5)	15		(2.8)	23		(4.8)	14		(3.4)	19		(3.4)	12	!	(3.8)	8	!	(3.8)	25		(5.1)	24		(4.3)
Physical condition of buildings	13		(1.9)	14		(2.3)	13		(2.7)	15	!	(5.1)	12		(3.1)	15		(2.9)	10	!	(3.2)	‡		(†)	18		(4.5)	20		(3.9)
Size or configuration of rooms	16		(2.2)	16		(2.4)	16		(2.9)	15	!	(4.9)	16		(3.4)	18		(3.2)	9	!	(3.2)	15	!	(5.5)	16		(4.6)	26		(5.0)
	Percentage distribution of schools
By extent to which environmental      factors interfere with instruction
In permanent buildings2	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)
Not at all	56		(1.6)	56		(1.9)	58		(2.7)	55		(2.8)	56		(3.1)	59		(2.9)	57		(2.7)	62		(4.4)	51		(3.6)	57		(3.2)
Minor extent	33		(1.4)	34		(1.7)	30		(2.4)	34		(2.8)	33		(2.6)	32		(2.7)	32		(2.8)	32		(4.2)	38		(2.9)	32		(3.1)
Moderate extent	9		(1.0)	9		(1.3)	10		(1.4)	10		(2.0)	10		(1.8)	7		(1.2)	10		(1.9)	6	!	(2.3)	10		(2.5)	8		(2.0)
Major extent	1	!	(0.4)	1	!	(0.4)	2	!	(0.7)	1	!	(0.4)	‡		(†)	2	!	(0.7)	‡		(†)	#		(†)	‡		(†)	3	!	(1.0)
In portable buildings3	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)	100		(†)
Not at all	55		(3.3)	55		(3.7)	58		(4.3)	58		(6.8)	56		(5.7)	53		(4.3)	61		(6.1)	58		(9.3)	54		(6.4)	49		(5.6)
Minor extent	30		(3.1)	31		(3.6)	27		(3.5)	19		(5.4)	34		(5.8)	32		(3.8)	27		(4.7)	34		(8.5)	30		(6.5)	32		(5.5)
Moderate extent	13		(2.1)	12		(2.4)	14		(2.6)	21		(6.0)	10	!	(3.0)	10		(2.7)	13		(3.6)	‡		(†)	13	!	(4.4)	16		(4.5)
Major extent	2	!	(0.8)	‡		(†)	‡		(†)	‡		(†)	#		(†)	5	!	(1.9)	#		(†)	‡		(†)	‡		(†)	‡		(†)

†Not applicable.

#Rounds to zero.

!Interpret data with caution. The coefficient of variation (CV) for this estimate is between 30 and 50 percent.

‡Reporting standards not met. The coefficient of variation (CV) for this estimate is 50 percent or greater.

1 Excludes special education, vocational, and alternative schools; schools without enrollment data; and schools offering only preprimary education.

2 Data are based on the 99 percent of public schools with classrooms in permanent buildings.

3 Data are based on the 33 percent of public schools with classrooms in portable (temporary) buildings.

NOTE: Detail may not sum to totals because of rounding.

SOURCE: U.S. Department of Education, National Center for Education Statistics, Fast Response Survey System (FRSS), "Public School Principals' Perceptions of Their School Facilities: Fall 2005," FRSS 88, 2005, and unpublished tabulations. (This table was prepared June 2007.)