| 1 | Bridgeport School District | Bridgeport | 19,591 |
| 2 | New Haven School District | New Haven | 18,966 |
| 3 | Waterbury School District | Waterbury | 18,956 |
| 4 | Hartford School District | Hartford | 16,839 |
| 5 | Stamford School District | Stamford | 16,339 |
| 6 | Danbury School District | Danbury | 12,126 |
| 7 | Norwalk School District | Norwalk | 11,520 |
| 8 | Connecticut Technical Education and Career System | Hartford | 11,194 |
| 9 | New Britain School District | New Britain | 9,900 |
| 10 | Fairfield School District | Fairfield | 9,355 |
| 11 | West Hartford School District | West Hartford | 9,261 |
| 12 | Capitol Region Education Council | Hartford | 8,916 |
| 13 | Meriden School District | Meriden | 8,789 |
| 14 | Greenwich School District | Greenwich | 8,589 |
| 15 | Bristol School District | Bristol | 7,774 |
| 16 | Trumbull School District | Trumbull | 6,940 |
| 17 | Stratford School District | Stratford | 6,743 |
| 18 | East Hartford School District | East Hartford | 6,410 |
| 19 | Southington School District | Southington | 6,242 |
| 20 | Manchester School District | Manchester | 6,167 |
| 21 | West Haven School District | West Haven | 5,998 |
| 22 | Glastonbury School District | Glastonbury | 5,674 |
| 23 | Hamden School District | Hamden | 5,455 |
| 24 | Westport School District | Westport | 5,333 |
| 25 | Milford School District | Milford | 5,327 |
| 26 | Wallingford School District | Wallingford | 5,292 |
| 27 | South Windsor School District | South Windsor | 5,022 |
| 28 | Enfield School District | Enfield | 4,826 |
| 29 | Darien School District | Darien | 4,681 |
| 30 | Shelton School District | Shelton | 4,513 |
| 31 | Ridgefield School District | Ridgefield | 4,474 |
| 32 | Middletown School District | Middletown | 4,378 |
| 33 | Naugatuck School District | Naugatuck | 4,231 |
| 34 | Cheshire School District | Cheshire | 4,224 |
| 35 | Farmington School District | Farmington | 4,194 |
| 36 | Simsbury School District | Simsbury | 4,165 |
| 37 | New Canaan School District | New Canaan | 4,109 |
| 38 | Groton School District | Groton | 4,099 |
| 39 | Newtown School District | Newtown | 3,951 |
| 40 | Torrington School District | Torrington | 3,945 |
| 41 | Newington School District | Newington | 3,893 |
| 42 | Wilton School District | Wilton | 3,809 |
| 43 | New Milford School District | New Milford | 3,602 |
| 44 | Wethersfield School District | Wethersfield | 3,584 |
| 45 | Monroe School District | Monroe | 3,470 |
| 46 | Regional School District 15 | Middlebury | 3,435 |
| 47 | Windsor School District | Windsor | 3,342 |
| 48 | Norwich School District | Norwich | 3,336 |
| 49 | Bethel School District | Bethel | 3,249 |
| 50 | North Haven School District | North Haven | 3,236 |