| ELEMENTARY | MIDDLE | HIGH | ||||
| MONTGOMERY | 25 | 26 | 27 | |||
| Arlington | 21 | 18 | 20 | |||
| Alexandria | 20 | 21 | 23 | |||
| Fairfax | 22 | 25 | 25 | |||
| Fauquier | 20 | 22 | Not Available | |||
| Loudon | 23 | 22 | 27 | |||
| Prince William | 25 | 23 | 23 | |||
| Anne Arundel | 25 fn1 | 22 | 23 | |||
| Calvert | 25 | 25 | 25 | |||
| Charles | 27 fn2 | 24 | 21 | |||
| Howard | 25 | 23 | 26 | |||
| Prince George's | 31 fn3 | 30 | 21 | |||
| St. Mary's | 26 fn2 | 23 | 25 | |||
| D.C. | 22 fn4 | 27 fn5 | 29 fn5 | |||
| CLASS SIZES AT SELECTED AREA PRIVATE SCHOOLS | ||||||
| Sidwell Friends | 14 | 15 | 15 | |||
| National Cathedral School | 15 | 15 | 16 | |||
| French International School | 24 | 24 | 19 | |||
| Islamic Saudi Academy | 19 | 19 | 19 |
Footnotes1. Size for grades 1-3 4. Size for kindergarten through 3rd grade 2. Size for grades 3-5 5. Does not include English and math classes, 3. Size for grades 2-6 which have fewer students. NOTE: Numbers are rouinded Most figures are actual averages. For school districts that could not provide that information, the numbers are the guidelines on student-teacher ratios that officials said they try to follow. SOURCE: The Washington Post, December 15, 1997, which cites as its source "Public and private school officials".