| URBAN ASSEMBLY SCHOOL FOR LAW AND JUSTICE (THE) | 416 | regular | high |
| URBAN ASSEMBLY SCHOOL FOR LEADERSHIP AND EMPOWERMENT | 487 | regular | other |
| URBAN ASSEMBLY SCHOOL FOR MEDIA STUDIES | 331 | regular | high |
| URBAN ASSEMBLY SCHOOL FOR MUSIC AND ART | 142 | regular | high |
| URBAN ASSEMBLY SCHOOL FOR THE PERFORMING ARTS | 178 | regular | high |
| URBAN ASSEMBLY SCHOOL OF BUSINESS FOR YOUNG WOMEN | 127 | regular | high |
| URBAN ASSEMBLY SCHOOL OF DESIGN AND CONSTRUCTION | 200 | regular | high |
| URBAN ASSEMBLY UNISON SCHOOL (THE) | 172 | regular | middle |
| URBAN CHOICE CHARTER SCHOOL | 378 | regular | elementary |
| Urban Collaborative Program | 145 | regular | middle |
| Urban Corps of San Diego County Charter | 198 | regular | high |
| Urban Discovery Academy Charter | 330 | regular | other |
| URBAN DOVE TEAM CHARTER SCHOOL | 289 | alternative | high |
| URBAN DOVE TEAM CHARTER SCHOOL II | 285 | regular | high |
| URBAN INSTITUTE OF MATHEMATICS | 361 | regular | middle |
| Urban Middle | 568 | regular | middle |
| Urban Montessori Charter | 343 | regular | elementary |
| URBAN PARK EL | 507 | regular | other |
| Urban Pathways 6-12 CS | 325 | regular | other |
| Urban Pathways K-5 College CS | 304 | regular | elementary |
| Urban Prep Chrtr Sch for Yng Men | 52 | regular | high |
| Urban Prep Chtr Bronzeville HS | 148 | regular | high |
| Urban Prep Chtr Acad Englewood HS | 87 | regular | high |
| Urban Promise Academy Middle | 392 | regular | middle |
| URBAN SCHOLARS COMMUNITY SCHOOL | 294 | regular | other |
| Urbana Early Childhood Ctr | 244 | regular | other |
| Urbana Elementary | 736 | regular | other |
| Urbana Elementary School | 864 | regular | other |
| Urbana High | 1,989 | regular | high |
| Urbana High School | 1,176 | regular | high |
| Urbana High School | 528 | regular | high |
| Urbana Junior High School | 387 | regular | middle |
| Urbana Middle | 1,090 | regular | middle |
| Urbana Middle School | 877 | regular | middle |
| Urbandale High School | 1,301 | regular | high |
| Urbandale Middle School | 892 | regular | middle |
| Urbin T. Kelley School | 301 | regular | other |
| Urbita Elementary | 390 | regular | elementary |
| URCEO-Upper Rogue Center for Educational Opportunities | 186 | alternative | other |
| Uriah H Lawton School | 422 | regular | elementary |
| URIAH HILL SCHOOL | 186 | regular | other |
| Urie Elementary | 242 | regular | elementary |
| Ursa Minor Elementary | 294 | regular | other |
| URSULA STEPHENS EL | 578 | regular | other |
| US Jones Elementary School | 431 | regular | elementary |
| USD 265 - Goddard Virtual School | 29 | regular | other |
| USD 331 Virtual School | 14 | regular | other |
| USD 363 Virtual Academy | 10 | regular | high |
| USD 457 Virtual Academy | 76 | regular | other |
| USD 508 eAcademy | 36 | regular | other |
