| Total | 5,057,520 | 100.0 | | 2,551,196 | 100.0 | | 859,453 | 100.0 | | 1,646,871 | 100.0 |
| | | | | | | | | | | | |
| NCES typology | | | | | | | | | | | |
| Catholic | 2,246,240 | 44.4 | | 1,549,040 | 60.7 | | 597,568 | 69.5 | | 99,633 | 6.0 |
| Parochial | 982,380 | 19.4 | | 894,786 | 35.1 | | 66,055 | 7.7 | | 21,538 | 1.3 |
| Diocesan | 895,840 | 17.7 | | 589,367 | 23.1 | | 284,864 | 33.1 | | 21,609 | 1.3 |
| Private | 368,020 | 7.3 | | 64,886 | 2.5 | | 246,649 | 28.7 | | 56,485 | 3.4 |
| | | | | | | | | | | | |
| Other religious | 1,884,616 | 37.3 | | 707,099 | 27.7 | | 135,631 | 15.8 | | 1,041,886 | 63.3 |
| Conservative Christian | 823,696 | 16.3 | | 220,912 | 8.7 | | 34,163 | 4.0 | | 568,621 | 34.5 |
| Affiliated | 584,979 | 11.6 | | 275,804 | 10.8 | | 58,208 | 6.8 | | 250,967 | 15.2 |
| Unaffiliated | 475,942 | 9.4 | | 210,384 | 8.2 | | 43,261 | 5.0 | | 222,298 | 13.5 |
| | | | | | | | | | | | |
| Nonsectarian | 926,664 | 18.3 | | 295,057 | 11.6 | | 126,255 | 14.7 | | 505,353 | 30.7 |
| Regular | 604,383 | 12.0 | | 174,458 | 6.8 | | 86,287 | 10.0 | | 343,639 | 20.9 |
| Special emphasis | 218,123 | 4.3 | | 110,325 | 4.3 | | 27,664 | 3.2 | | 80,133 | 4.9 |
| Special education | 104,158 | 2.1 | | 10,274 | 0.4 | | 12,304 | 1.4 | | 81,580 | 5.0 |
| | | | | | | | | | | | |
| Program emphasis | | | | | | | | | | | |
| Regular elementary/secondary | 4,570,280 | 90.4 | | 2,373,150 | 93.0 | | 788,832 | 91.8 | | 1,408,298 | 85.5 |
| Montessori | 90,357 | 1.8 | | 73,130 | 2.9 | | ‡ | ‡ | | 16,146 | 1.0 |
| Special program emphasis | 206,102 | 4.1 | | 72,588 | 2.8 | | 38,187 | 4.4 | | 95,326 | 5.8 |
| Special education | 115,663 | 2.3 | | 12,035 | 0.5 | | 13,061 | 1.5 | | 90,567 | 5.5 |
| Vocational/technical | ‡ | ‡ | | ‡ | ‡ | | ‡ | ‡ | | ‡ | ‡ |
| Alternative | 66,388 | 1.3 | | 13,934 | 0.5 | | 16,902 | 2.0 | | 35,553 | 2.2 |
| Early childhood | 6,812 | 0.1 | | 6,359 | 0.2 | | † | † | | ‡ | ‡ |
| | | | | | | | | | | | |
| Size (number of students) | | | | | | | | | | | |
| Less than 50 | 236,267 | 4.7 | | 132,570 | 5.2 | | 18,690 | 2.2 | | 85,007 | 5.2 |
| 50–149 | 763,189 | 15.1 | | 478,346 | 18.7 | | 54,861 | 6.4 | | 229,983 | 14.0 |
| 150–299 | 1,321,541 | 26.1 | | 905,328 | 35.5 | | 104,121 | 12.1 | | 312,092 | 19.0 |
| 300–499 | 1,089,541 | 21.5 | | 641,607 | 25.1 | | 155,142 | 18.1 | | 292,791 | 17.8 |
| 500–749 | 804,744 | 15.9 | | 307,761 | 12.1 | | 199,120 | 23.2 | | 297,863 | 18.1 |
| 750 or more | 842,237 | 16.7 | | 85,584 | 3.4 | | 327,519 | 38.1 | | 429,134 | 26.1 |
| | | | | | | | | | | | |
| Region | | | | | | | | | | | |
| Northeast | 1,202,783 | 23.8 | | 623,334 | 24.4 | | 278,781 | 32.4 | | 300,668 | 18.3 |
| Midwest | 1,233,266 | 24.4 | | 769,825 | 30.2 | | 225,414 | 26.2 | | 238,027 | 14.5 |
| South | 1,626,304 | 32.2 | | 632,074 | 24.8 | | 174,396 | 20.3 | | 819,834 | 49.8 |
| West | 995,167 | 19.7 | | 525,963 | 20.6 | | 180,862 | 21.0 | | 288,342 | 17.5 |
| | | | | | | | | | | | |
| Urbanicity type | | | | | | | | | | | |
| City | 2,142,476 | 42.4 | | 1,088,022 | 42.6 | | 431,087 | 50.2 | | 623,368 | 37.9 |
| Suburban | 1,948,911 | 38.5 | | 1,065,475 | 41.8 | | 292,639 | 34.0 | | 590,797 | 35.9 |
| Town | 365,072 | 7.2 | | 197,073 | 7.7 | | 31,832 | 3.7 | | 136,168 | 8.3 |
| Rural | 601,060 | 11.9 | | 200,626 | 7.9 | | 103,896 | 12.1 | | 296,539 | 18.0 |
| † Not applicable. |
| ‡ Reporting standards not met. |
| NOTE: Detail may not sum to totals because of rounding or missing values in cells where reporting standards were not met. These estimates do not include private schools for which kindergarten is the highest grade. |
| SOURCE: U.S. Department of Education, National Center for Education Statistics, Private School Universe Survey (PSS), 2005–2006. |