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        CDC Home

        Erratum: Vol. 64, No. 30

        In the report, "School Start Times for Middle School and High School Students — United States, 2011–12 School Year," an error occurred in the arrangement of column headings in the table on pages 811 and 812. The corrected table follows.

        TABLE. Average start time and percentage distribution of start times for public middle, high, and combined schools,* by school level and state — Schools and Staffing Survey 2011–12 school year

        School level
        and state

        Estimated no. of public middle, high, and combined schools

        Estimated no. of students in public middle, high, and combined schools

        Average start time (a.m.)

        Percentage distribution of public middle, high,
        and combined school start times

        Before
        7:30 a.m.

        7:30 a.m.
        to 7:59 a.m.

        8:00 a.m.
        to 8:29 a.m.

        8:30 a.m.
        or later

        No.

        (SE)

        No.

        (SE)

         Time

        (SE)§

        %

        (SE)

        %

        (SE)

        %

        (SE)

        %

        (SE)

        Total

        39,700

        (390)

        26,284,000

        (613,100)

        8:03

        (1)

        6.7

        (0.4)

        31.9

        (0.8)

        43.7

        (0.8)

        17.7

        (0.7)

        School level

        Middle

        13,990

        (169)

        8,674,000

        (135,800)

        8:04

        (1)

        4.8

        (0.7)

        35.9

        (1.3)

        40.4

        (1.1)

        18.9

        (1.0)

        High

        18,360

        (434)

        14,995,000

        (413,600)

        7:59

        (1)

        9.5

        (0.6)

        33.0

        (1.1)

        43.1

        (1.1)

        14.4

        (0.9)

        Combined

        7,350

        (571)

        2,615,000

        (300,600)

        8:08

        (3)

        3.5

        (0.7)

        21.6

        (2.2)

        51.5

        (2.6)

        23.4

        (2.7)

        State

        Alabama

        680

        (39)

        344,000

        (31,100)

        7:49

        (2)

        6.4

        (2.2)††

        57.8

        (4.4)

        34.0

        (5.3)

        —**

        Alaska

        —**

        —**

        8:33

        (8)

        0.0

        §§

        11.6

        (3.8)††

        11.6

        (4.8)††

        76.8

        (7.8)

        Arizona

        860

        (159)

        506,000

        (53,100)

        8:03

        (3)

        8.1

        (2.9)††

        23.3

        (6.6)

        47.3

        (5.8)

        21.3

        (5.0)

        Arkansas

        450

        (28)

        292,000

        (30,300)

        8:01

        (1)

        —**

        29

        (4.7)

        63.0

        (4.7)

        7.3

        (2.0)

        California

        3,880

        (219)

        3,303,000

        (146,300)

        8:07

        (2)

        3.5

        (0.9)

        27.7

        (3.1)

        47.6

        (3.3)

        21.2

        (2.9)

        Colorado

        730

        (84)

        527,000

        (51,700)

        7:54

        (2)

        16.9

        (5.1)

        31.3

        (6.6)

        40.9

        (5.1)

        10.9

        (2.6)

        Connecticut

        380

        (24)

        260,000

        (23,900)

        7:46

        (2)

        13.8

        (2.9)

        57.4

        (4.2)

        24.0

        (3.8)

        4.8

        (2.1)††

        Delaware

        090

        (4)

        63,000

        (4,900)

        7:42

        (3)

        24.0

        (5.3)

        51.9

        (6.3)

        16.6

        (4.6)

        7.5

        (3.0)††

        District of Columbia

        —**

        —**

        —**

        —**

        —**

        —**

        —**

        Florida

        1,570

        (100)

        1,406,000

        (111,400)

        8:17

        (3)

        19.5

        (2.5)

        18.6

        (2.4)

        19.3

        (2.9)

        42.6

        (3.8)

        Georgia

        1,030

        (24)

        955,000

        (77,500)

        8:09

        (2)

        —**

        28.7

        (4.3)

        43.9

        (4.6)

        24.0

        (3.4)

        Hawaii

        —**

        —**

        8:03

        (3)

        0.0

        §§

        42.5

        (17.3)††

        57.5

        (17.3)††

        0.0

        §§

        Idaho

        370

        (182)

        157,000

        (40,300)

        8:13

        (28)

        0.0

        §§

        20.9

        (7.5)††

        58.3

        (14.5)

        —**

        Illinois

        1,590

        (48)

        1,008,000

        (145,200)

        8:13

        (3)

        —**

        19.7

        (3.4)

        48.7

        (5.5)

        28.4

        (6.0)

        Indiana

        740

        (27)

        559,000

        (43,800)

        7:58

        (2)

        —**

        41.8

        (3.2)

        45.1

        (4.0)

        10.2

        (2.7)

        Iowa

        550

        (35)

        249,000

        (31,300)

        8:23

        (6)

        0.0

        §§

        6.3

        (2.0)††

        66.3

        (7.2)

        27.4

        (7.6)

        Kansas

        540

        (20)

        204,000

        (20,000)

        8:00

        (1)

        —**

        26.5

        (3.5)

        71.5

        (3.7)

        —**

        Kentucky

        710

        (32)

        358,000

        (33,100)

        8:03

        (4)

        8.6

        (4.2)††

        24.8

        (4.0)

        49.0

        (5.8)

        17.5

        (4.0)

        Louisiana

        630

        (32)

        316,000

        (33,100)

        7:40

        (2)

        29.9

        (4.8)

        53.1

        (4.9)

        12.1

        (3.5)

        —**

        Maine

        240

        (5)

        105,000

        (5,500)

        7:53

        (3)

        6.6

        (1.9)

        53.1

        (5.1)

        32.8

        (4.8)

        7.5

        (3.6)††

        Maryland

        —**

        —**

        —**

        —**

        —**

        —**

        —**

        Massachusetts

        700

        (58)

        527,000

        (48,600)

        7:53

        (4)

        8.0

        (3.6)††

        53.3

        (6.1)

        27.2

        (5.1)

        11.5

        (5.4)††

        Michigan

        1,540

        (47)

        891,000

        (59,100)

        7:54

        (2)

        9.5

        (2.1)

        43.6

        (3.6)

        39.0

        (3.5)

        7.9

        (2.2)

        Minnesota

        1,100

        (58)

        522,000

        (43,100)

        8:18

        (3)

        0.9

        (0.4)††

        18.8

        (2.6)

        46.7

        (3.7)

        33.6

        (3.5)

        Mississippi

        570

        (23)

        272,000

        (18,600)

        7:47

        (2)

        12.4

        (3.7)††

        58.3

        (4.3)

        29.3

        (4.3)

        0.0

        §§

        Missouri

        900

        (37)

        530,000

        (28,700)

        7:54

        (1)

        6.7

        (1.7)

        39.0

        (3.9)

        51.0

        (3.9)

        3.2

        (1.4)††

        Montana

        220

        (15)

        78,000

        (8,200)

        8:13

        (2)

        0.0

        §§

        5.8

        (2.1)††

        80.9

        (6.1)

        13.4

        (5.5)††

        Nebraska

        370

        (26)

        150,000

        (19,200)

        8:07

        (1)

        0.0

        §§

        8.0

        (2.5)††

        88.9

        (2.4)

        3.0

        (1.4)††

        Nevada

        260

        (12)

        276,000

        (20,900)

        7:51

        (3)

        18.0

        (3.0)

        30.7

        (5.5)

        38.2

        (6.0)

        13.1

        (3.6)

        New Hampshire

        180

        (18)

        116,000

        (7,800)

        7:46

        (2)

        11.6

        (3.2)

        64.4

        (5.7)

        19.7

        (4.4)

        —**

        New Jersey

        870

        (52)

        698,000

        (45,200)

        8:00

        (2)

        6.7

        (2.0)

        37.2

        (4.5)

        41.2

        (4.7)

        14.9

        (3.6)

        New Mexico

        310

        (99)

        151,000

        (47,000)

        8:10

        (3)

        1.6

        (0.7)††

        24.1

        (5.8)

        53.9

        (10.2)

        20.4

        (5.9)

        New York

        2,070

        (108)

        1,670,000

        (149,100)

        7:59

        (2)

        7.7

        (3.1)††

        31.6

        (2.9)

        49.6

        (3.4)

        11.0

        (2.5)

        North Carolina

        1,120

        (35)

        768,000

        (88,900)

        8:03

        (2)

        —**

        36.6

        (5.0)

        45.3

        (5.4)

        15.2

        (4.2)

        North Dakota

        220

        (9)

        67,000

        (5,000)

        8:31

        (1)

        0.0

        §§

        2.8

        (1.2)††

        18.7

        (3.2)

        78.5

        (3.4)

        Ohio

        1,640

        (73)

        1,061,000

        (60,800)

        7:52

        (2)

        13.1

        (2.0)

        45.3

        (4.3)

        29.3

        (3.7)

        12.3

        (3.0)


        TABLE. (Continued) Average start time and percentage distribution of start times for public middle, high, and combined schools,* by school level and state — Schools and Staffing Survey 2011–12 school year

        School level
        and state

        Estimated no. of public middle, high, and combined schools

        Estimated no. of students in public middle, high, and combined schools

        Average start time (a.m.)

        Percentage distribution of public middle, high,
        and combined school start times

        Before
        7:30 a.m.

        7:30 a.m.
        to 7:59 a.m.

        8:00 a.m.
        to 8:29 a.m.

        8:30 a.m.
        or later

        No.

        (SE)

        No.

        (SE)

         Time

        (SE)§

        %

        (SE)

        %

        (SE)

        %

        (SE)

        %

        (SE)

        Oklahoma

        700

        (27)

        356,000

        (29,000)

        8:10

        (2)

        0.0

        §§

        12.0

        (2.8)

        77.6

        (3.9)

        10.4

        (2.8)

        Oregon

        480

        (25)

        282,000

        (21,100)

        8:14

        (3)

        —**

        25.2

        (3.8)

        45.0

        (4.1)

        28.9

        (4.2)

        Pennsylvania

        1,280

        (145)

        1,001,000

        (189,700)

        7:48

        (2)

        13.0

        (3.0)

        51.3

        (6.6)

        32.6

        (7.9)

        3.1

        (1.3)††

        Rhode Island

        100

        (10)

        68,000

        (6,200)

        7:50

        (4)

        24.8

        (6.1)

        27.5

        (7.9)

        40.3

        (9.2)

        —**

        South Carolina

        500

        (9)

        411,000

        (26,400)

        8:03

        (2)

        —**

        35.3

        (6.5)

        50.9

        (6.8)

        12.3

        (3.7)

        South Dakota

        230

        (11)

        78,000

        (5,200)

        8:13

        (2)

        —**

        6.6

        (2.7)††

        77.7

        (4.2)

        14.8

        (4.9)††

        Tennessee

        760

        (47)

        533,000

        (31,000)

        7:57

        (3)

        13.3

        (3.4)

        29.4

        (4.7)

        40.0

        (5.1)

        17.2

        (3.5)

        Texas

        3,940

        (183)

        2,556,000

        (254,700)

        8:05

        (2)

        3.1

        (1.2)††

        28.3

        (3.4)

        46.3

        (3.5)

        22.4

        (2.7)

        Utah

        410

        (22)

        297,000

        (45,200)

        8:05

        (3)

        0.0

        §§

        33.1

        (5.3)

        49.6

        (5.9)

        17.3

        (5.9)††

        Vermont

        100

        (2)

        46,000

        (2,600)

        8:05

        (2)

        —**

        34.1

        (5.1)

        48.0

        (4.8)

        15.1

        (3.0)

        Virginia

        850

        (17)

        555,000

        (37,700)

        8:04

        (2)

        10.0

        (2.6)

        26.6

        (4.4)

        42.6

        (4.4)

        20.8

        (3.6)

        Washington

        930

        (35)

        526,000

        (42,300)

        8:08

        (2)

        6.4

        (1.9)††

        24.2

        (3.8)

        50.2

        (4.6)

        19.3

        (3.5)

        West Virginia

        300

        (5)

        160,000

        (7,000)

        7:54

        (2)

        11.1

        (2.0)

        33.9

        (3.3)

        47.9

        (4.0)

        7.1

        (2.3)††

        Wisconsin

        860

        (37)

        423,000

        (44,200)

        7:59

        (3)

        2.3

        (1.0)††

        48.2

        (5.4)

        39.1

        (4.3)

        10.4

        (4.4)††

        Wyoming

        130

        (8)

        50,000

        (4,300)

        7:59

        (1)

        0.0

        §§

        41.1

        (5.2)

        58.9

        (5.2)

        0.0

        §§

        Source: U.S. Department of Education, National Center for Education Statistics, Schools and Staffing Survey (SASS), "Public School Data File," 2011–12.

        Abbreviation: SE = standard error.

        * Middle schools include any schools with no grade lower than 5 and no grade higher than 8. High schools include any school with no grade lower than 7 and at least one grade higher than 8. Combined schools include any schools with at least one grade lower than 7 and at least one grade higher than 8, or with all students in ungraded classrooms.

        Detail may not sum to totals because of rounding and because some data are not shown.

        § SE of average start time is expressed in minutes.

        Schools with afternoon start times were not included in analysis.

        ** Reporting standards not met. Relative standard error ≥0.5 or the response rate <50%.

        †† Interpret data with caution. 0.3 ≤ relative standard error < 0.5.

        §§ Rounds to zero. SE is not applicable.



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