| Total | 28,996 | | 100.0 | | 5,057,520 | 100.0 | | 435,485 | 100.0 |
| | | | | | | | | | |
| Religious orientation | 22,079 | | 76.1 | | 4,130,856 | 81.7 | | 324,252 | 74.5 |
| Roman Catholic | 7,634 | | 26.3 | | 2,246,240 | 44.4 | | 149,436 | 34.3 |
| African Methodist Episcopal | ‡ | | ‡ | | ‡ | ‡ | | ‡ | ‡ |
| Amish | 824 | | 2.8 | | 25,589 | 0.5 | | 1,368 | 0.3 |
| Assembly of God | 379 | | 1.3 | | 56,683 | 1.1 | | 4,554 | 1.0 |
| Baptist | 2,511 | | 8.7 | | 278,921 | 5.5 | | 25,599 | 5.9 |
| | | | | | | | | | |
| Brethren | 84 | | 0.3 | | 11,512 | 0.2 | | 946 | 0.2 |
| Calvinist | 132 | | 0.5 | | 32,642 | 0.6 | | 2,254 | 0.5 |
| Christian (unspecified) | 4,338 | | 15.0 | | 633,861 | 12.5 | | 57,495 | 13.2 |
| Church of Christ | 160 | | 0.6 | | 37,549 | 0.7 | | 2,943 | 0.7 |
| Church of God | 110 | | 0.4 | | 11,436 | 0.2 | | 1,083 | 0.2 |
| | | | | | | | | | |
| Church of God in Christ | 50 | ! | 0.2 | ! | 3,698 | 0.1 | | 314 | 0.1 |
| Church of the Nazarene | 76 | | 0.3 | | 9,440 | 0.2 | | 779 | 0.2 |
| Disciples of Christ | ‡ | | ‡ | | ‡ | ‡ | | ‡ | ‡ |
| Episcopal | 334 | | 1.2 | | 100,961 | 2.0 | | 11,533 | 2.6 |
| Friends | 82 | | 0.3 | | 20,222 | 0.4 | | 2,419 | 0.6 |
| | | | | | | | | | |
| Greek Orthodox | 34 | | 0.1 | | 4,163 | 0.1 | | 472 | 0.1 |
| Islamic | 202 | | 0.7 | | 26,209 | 0.5 | | 2,969 | 0.7 |
| Jewish | 853 | | 2.9 | | 204,847 | 4.1 | | 23,856 | 5.5 |
| Latter Day Saints | ‡ | | ‡ | | ‡ | ‡ | | ‡ | ‡ |
| Lutheran Church—Missouri Synod | 1,098 | | 3.8 | | 144,669 | 2.9 | | 10,768 | 2.5 |
| | | | | | | | | | |
| Evangelical Lutheran Church In America | 111 | | 0.4 | | 17,672 | 0.3 | | 1,352 | 0.3 |
| Wisconsin Evangelical Lutheran Synod | 365 | | 1.3 | | 31,267 | 0.6 | | 2,265 | 0.5 |
| Other Lutheran | 58 | | 0.2 | | 4,996 | 0.1 | | 413 | 0.1 |
| Mennonite | 473 | | 1.6 | | 27,795 | 0.5 | | 2,365 | 0.5 |
| Methodist | 163 | | 0.6 | | 19,394 | 0.4 | | 1,793 | 0.4 |
| | | | | | | | | | |
| Pentecostal | 410 | | 1.4 | | 22,971 | 0.5 | | 2,510 | 0.6 |
| Presbyterian | 168 | | 0.6 | | 38,314 | 0.8 | | 3,510 | 0.8 |
| Seventh-Day Adventist | 883 | | 3.0 | | 55,488 | 1.1 | | 4,394 | 1.0 |
| Other | 521 | | 1.8 | | 61,473 | 1.2 | | 6,528 | 1.5 |
| | | | | | | | | | |
| Nonsectarian | 6,916 | | 23.9 | | 926,664 | 18.3 | | 111,233 | 25.5 |
| ! Interpret data with caution. The coefficient of variation for this estimate is larger than 25 percent. |
| ‡ Reporting standards not met. |
| NOTE: Detail may not sum to totals because of rounding or missing values in cells with too few sample cases. 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. |