| William R Fallon | 30 | regular | elementary |
| William R Martin Middle School | 180 | regular | middle |
| William R Sullivan Elementary School | 568 | regular | other |
| William R. Anton Elementary | 453 | regular | elementary |
| William R. Buckley Elementary | 499 | regular | elementary |
| William R. Peck School | 192 | regular | elementary |
| William R. Satz School | 455 | regular | middle |
| WILLIAM R. TEAGUE ES | 394 | regular | elementary |
| William Rainey Harper | 423 | regular | other |
| WILLIAM RALL SCHOOL | 539 | regular | elementary |
| William Ramsay Elementary | 689 | regular | other |
| William Roper Early Childhood Learning Center | 113 | regular | other |
| WILLIAM RUSHING MIDDLE | 1,691 | regular | middle |
| WILLIAM S COVERT SCHOOL | 286 | regular | elementary |
| William S Greene | 733 | regular | other |
| WILLIAM S GUSSNER ELEMENTARY SCHOOL | 239 | regular | other |
| William S Guy Middle School | 254 | regular | elementary |
| WILLIAM S HACKETT MIDDLE SCHOOL | 615 | regular | middle |
| WILLIAM S MAXEY ELEMENTARY | 523 | regular | other |
| William S. Baer School | 167 | special-ed | other |
| William S. Cohen School | 372 | regular | middle |
| William S. Hart High | 1,941 | regular | high |
| William S. James Elementary | 463 | regular | elementary |
| WILLIAM S. TALBOT ELEM SCHOOL | 573 | regular | other |
| William Saroyan Elementary | 697 | regular | elementary |
| William Seach | 372 | regular | elementary |
| William Shemin Midtown Community School #8 | 1,203 | regular | other |
| William Sheppard Middle | 451 | regular | middle |
| WILLIAM SIDNEY MOUNT ELEMENTARY SCHOOL | 525 | regular | other |
| William Smith High School | 410 | regular | high |
| William Sonny Nelson School | 17 | regular | other |
| WILLIAM SOUTHERN ELEM. | 458 | regular | other |
| WILLIAM STREET SCHOOL | 1,274 | regular | elementary |
| WILLIAM STRIBLING EL | 507 | regular | other |
| William T Brown Elementary | 562 | regular | other |
| William T Machan Elementary School | 540 | regular | other |
| WILLIAM T ROGERS MIDDLE SCHOOL | 588 | regular | middle |
| William T. Barron Elementary School | 377 | regular | elementary |
| WILLIAM T. DWYER HIGH SCHOOL | 2,163 | regular | high |
| William Tell Aggeler Opportunity High | 61 | alternative | other |
| William Tell Elementary School | 734 | regular | other |
| William Tennent HS | 1,710 | regular | high |
| WILLIAM THOMAS MIDDLE SCHOOL | 333 | regular | middle |
| William Tyler Page Elementary | 620 | regular | other |
| William Tyson Elementary | 353 | regular | other |
| WILLIAM VELASQUEZ | 493 | regular | other |
| WILLIAM W & JOSEPHINE DORN CHARTER COMMUNITY SCHOOL | 49 | regular | elementary |
| William W Borden Elementary School | 333 | regular | elementary |
| William W Borden High School | 302 | regular | other |
| William W. Hall Academy | 444 | regular | other |