Percentage distribution of public schools by length of school week and, percentage distribution of schools with fewer than 5 days per week, by selected school characteristics and state: 2020–21

	Length of school week					Percentage distribution of schools with fewer than 5 days per week
Selected school characteristic and state	Fewer than 5 days		5 days	More than 5 days
All public schools	5.0		94.6	0.4		100.0

School classification
Traditional public	5.0		94.7	0.3	!	89.1
Charter school	5.8		93.4	0.8	!	10.9

Community type
City	3.5		95.8	0.7	!	19.4
Suburban	2.5		97.3	‡		15.9
Town	7.5		91.9	‡		19.5
Rural	8.5		91.3	‡		45.1

School level, based on CCD definition¹
Elementary	3.8		95.8	0.3	!	41.5
Middle	4.7		95.2	‡		14.6
Secondary/high	6.8		92.6	0.6	!	30.6
Combined/other	10.1		89.4	‡		13.3

School level, based on low and high grades²
Primary	3.8		95.8	0.3	!	42.5
Middle	4.5		95.3	‡		13.3
High	7.0		92.5	0.4	!	27.7
Combined	8.6		90.7	‡		16.5

Student enrollment
Less than 100	10.1		89.9	‡		14.7
100–199	9.2		90.0	‡		13.7
200–499	5.5		93.9	0.6	!	47.4
500–749	3.1		96.8	‡		14.3
750–999	3.2		96.4	‡		5.5
1,000 or more	2.2		97.6	‡		4.4

Percent of K–12 students who were approved for free or reduced-price lunches³
0–34	5.1		94.4	0.5	!	26.9
35–49	4.2		95.4	‡		11.2
50–74	6.0		94.0	‡		21.8
75 or more	4.9		94.7	0.5	!	40.1

School type
Regular	4.8		94.9	0.3	!	83.3
Special program emphasis	2.9	!	97.0	‡		2.6	!
Special education	‡		97.4	‡		‡
Career/technical/vocational	10.2	!	89.8	‡		2.8	!
Alternative/other	11.1		87.0	1.9	!	10.4

Region
Northeast	2.0		97.9	‡		6.2
Midwest	4.1		95.7	‡		19.6
South	2.8		96.7	0.5	!	20.1
West	11.1		88.3	0.6	!	54.1

State
Alabama	‡		97.0	‡		‡
Alaska	7.7	!	87.6	‡		0.8	!
Arizona	18.5		79.5	‡		9.4
Arkansas	‡		98.2	‡		‡
California	3.6		95.7	‡		7.7
Colorado	26.9		73.1	‡		8.6
Connecticut	‡		98.9	‡		‡
Delaware	7.2	!	92.8	‡		0.3	!
District of Columbia	8.9	!	91.1	‡		0.3	!
Florida	‡		99.3	‡		‡
Georgia	‡		97.5	‡		‡
Hawaii	‡		96.7	‡		‡
Idaho	30.0		70.0	‡		5.4
Illinois	‡		98.8	‡		‡
Indiana	‡		99.3	‡		‡
Iowa	‡		96.1	‡		‡
Kansas	‡		96.2	‡		‡
Kentucky	‡		96.8	‡		‡
Louisiana	‡		93.9	‡		‡
Maine	5.9	!	94.1	‡		0.8	!
Maryland	‡		97.4	‡		‡
Massachusetts	‡		100.0	‡		‡
Michigan	5.0	!	95.0	‡		3.6	!
Minnesota	3.6	!	96.4	‡		1.5	!
Mississippi	‡		95.2	‡		‡
Missouri	11.0		89.0	‡		4.5
Montana	25.2		74.8	‡		2.6
Nebraska	‡		94.8	‡		‡
Nevada	‡		90.3	‡		‡
New Hampshire	‡		98.8	‡		‡
New Jersey	‡		99.5	‡		‡
New Mexico	18.7		81.3	‡		4.1
New York	3.3	!	96.2	‡		3.2	!
North Carolina	2.8	!	97.2	‡		1.6	!
North Dakota	5.0	!	95.0	‡		0.5	!
Ohio	4.0	!	95.2	‡		2.9	!
Oklahoma	10.4	!	87.8	‡		3.3	!
Oregon	13.0		87.0	‡		4.1
Pennsylvania	‡		98.5	‡		‡
Rhode Island	‡		100.0	‡		‡
South Carolina	‡		99.0	‡		‡
South Dakota	23.1		76.9	‡		2.1
Tennessee	‡		97.6	‡		‡
Texas	‡		98.1	‡		‡
Utah	9.1	!	90.9	‡		2.2	!
Vermont	8.6	!	91.4	‡		0.6	!
Virginia	10.0		90.0	‡		4.4
Washington	12.8		87.2	‡		5.2
West Virginia	‡		94.6	‡		‡
Wisconsin	‡		98.8	‡		‡
Wyoming	28.7		71.3	‡		1.9

! 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. Either there are too few cases for a reliable analysis, or 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).

¹School level based on the definitions set by Common Core of Data (CCD). Elementary schools offer at least one grade of K through 4, and the number of elementary grades is at least as high as the number of middle grades. Middle schools offer at least one of grades 5 through 8, and the number of middle grades is greater than the number of elementary or secondary grades. Secondary/high schools are defined as schools that offer at least as many of grades 9 through 12 as lower grades. Combined/other schools include all other combinations of grades, including K–12 schools. These categories differ from past NTPS collections, so caution should be exercised when comparing estimates by level over time.

²School level based on low and high grades offered by the school. Primary schools offer at least one grade lower than 5 and no grade higher than 8. Middle schools offer no grade lower than 5 and no grade higher than 8. High schools offer no grade lower than 7 and at least one grade higher than 8. Combined schools offer at least one grade lower than 7 and at least one grade higher than 8. Schools with only ungraded classes were included with combined schools. These categories are provided because they are comparable to those used in previous NTPS publications.

³Schools that don’t participate in the free or reduced-price lunch program are included with the "0–34" percent category.

NOTE: Data are weighted estimates of the population. Detail may not sum to totals because of rounding.

SOURCE: U.S. Department of Education, National Center for Education Statistics, National Teacher and Principal Survey (NTPS), “Public School Data File,” 2020–21.