| Name |
School district/
Private/Religious |
Community/Town |
County |
District Reference Group |
Boarding school |
Sports league [1] |
Notes |
|---|
| Ansonia High School | Ansonia School District | Ansonia | New Haven County | H | | Naugatuck Valley League | |
| Emmett O'Brien Technical High School | Connecticut Technical High School System | Ansonia | New Haven County | | | Constitution State Conference | |
| Avon High School | Avon Public Schools | Avon | Hartford County | A | | North Central Connecticut Conference | |
| Avon Old Farms | Private | Avon, Connecticut | Hartford County | | Boarding
and day | | For boys |
| Woodland Regional High School | Regional School District 16 | Beacon Falls | New Haven County | | | Naugatuck Valley League | Also serves Prospect |
| Berlin High School | Berlin Public Schools | Berlin | Hartford County | D | | Northwest Conference | |
| Bethel High School | Bethel Public Schools | Bethel | Fairfield County |
D | | South-West Conference | |
| Woodhall School | | Bethlehem | Litchfield County | | | | |
| Bloomfield High School | Bloomfield Public Schools | Bloomfield | Hartford County | G | | Central Connecticut Conference | |
| Metropolitan Learning Center | Capitol Region Education Council | Bloomfield | Hartford County | | | | Grades 6-12 |
| Bolton High School | Bolton Public Schools | Bolton | Tolland County | C | | North Central Connecticut Conference | |
| Branford High School | Branford Public Schools | Branford | New Haven County | D | | Southern Connecticut Conference | |
| Bassick High School | Bridgeport Public Schools | Bridgeport | Fairfield County | I | | FCIAC | |
| The Bridge Academy | | Bridgeport | Fairfield County | | | | |
| Bridgeport International Academy | Private | Bridgeport | Fairfield County | | | | |
| Bullard Havens Technical High School | Connecticut Technical High School System | Bridgeport | Fairfield County | | | Constitution State Conference | |
| Central High School | Bridgeport Public Schools | Bridgeport | Fairfield County | I | | FCIAC | |
| Jewish High School of Connecticut | | Bridgeport | Fairfield County | | | | |
| Kolbe Cathedral High School | Roman Catholic Diocese of Bridgeport | Bridgeport | Fairfield County | | | South-West Conference | |
| Harding High School | Bridgeport Public Schools | Bridgeport | Fairfield County | I | | FCIAC | |
| University School | | Bridgeport | Fairfield County | | | | |
| Bristol Central High School | Bristol Public Schools | Bristol | Hartford County | G | | Central Connecticut Conference | |
| Bristol Technical Education Center | Connecticut Technical High School System | Bristol | Hartford County | | | | Attending students receive diplomas from their local high schools |
| Bristol Eastern High School | Bristol Public Schools | Bristol | Hartford County | G | | Central Connecticut Conference | |
| St. Paul Catholic High School | Roman Catholic Archdiocese of Hartford | Bristol | Hartford County | | | Northwest Conference | |
| Brookfield High School | Brookfield Public Schools | Brookfield | Fairfield County | A | | South-West Conference | |
| Lewis S. Mills High School | Regional School District 10 | Burlington | Hartford County | | | Berkshire League | serving Harwinton and Burlington |
| Housatonic Valley Regional High School | Region 1 School District | Canaan | Litchfield County | | | Berkshire League | Also serves Cornwall, Kent, North Canaan, Salisbury and Sharon. |
| Canton High School | Canton Public Schools | Canton | Hartford County | C | | North Central Connecticut Conference | |
| Parish Hill High School | Regional District 11 | Chaplin | Windham County | | | Constitution State Conference | Also serves Hampton and Scotland; Grades 7 - 12 Grade |
| Cheshire Academy | | Cheshire | New Haven County | A | | | |
| Cheshire High School | Cheshire Public Schools | Cheshire | New Haven County | A | | Southern Connecticut Conference | |
| Morgan School | Cllinton Public Schools | Clinton | Middlesex County | | | Shoreline Conference | |
| Bacon Academy | Colchester Public Schools | Colchester | New London | | | Eastern Connecticut Conference | |
| Connecticut River Academy | | East Hartford | Hartford County | | | | |
| Coventry High School | Coventry Public Schools | Coventry | Tolland County | E | | North Central Connecticut Conference | |
| Cromwell High School | Cromwell Public Schools | Cromwell | Middlesex County | E | | Shoreline Conference | |
| Danbury High School | Danbury Public Schools | Danbury | Fairfield County | H | | FCIAC | |
| Henry Abbott Technical High School | Connecticut Technical High School System | Danbury | Fairfield County | | | Constitution State Conference | |
| Immaculate High School | Roman Catholic Diocese of Bridgeport | Danbury | Fairfield County | | | South-West Conference | |
| Wooster School | | Danbury | Fairfield County | | | | |
| H. H. Ellis Technical High School | Connecticut Technical High School System | Danielson | Windham County | | | | |
| Darien High School | Darien Public Schools | Darien | Fairfield County | A | | FCIAC | |
| Valley Regional High School | Regional School District 4 | Deep River | Middlesex County | | | Shoreline Conference | Also serves Chester and Essex |
| Derby High School | Derby Public Schools | Derby | New Haven County | H | | Southern Connecticut Conference | |
| Coginchaug Regional High School | Regional School District 1 | Durham | Middlesex County | | | Shoreline Conference | Also serves Middlefield |
| East Granby High School | East Granby Public Schools | East Granby | Hartford County | D | | North Central Connecticut Conference | |
| Franklin Academy | | East Haddam | Middlesex County | | | | |
| Nathan Hale-Ray High School | East Haddam Public Schools | East Haddam | Middlesex County | E | | Shoreline Conference | |
| East Hampton High School | East Hampton Public Schools | East Hampton | Middlesex County | D | | Shoreline Conference | |
| Connecticut International Baccalaureate Academy | | East Hartford | Hartford County | | | | |
| East Hartford High School | East Hartford Public Schools | East Hartford | Hartford County | H | | Central Connecticut Conference | |
| East Haven High School | East Haven Public Schools | East Haven | New Haven County | G | | Southern Connecticut Conference | |
| East Lyme High School | East Lyme Public Schools | East Lyme | New London County | D | | Eastern Connecticut Conference | Also serves Salem |
| East Windsor High School | East Windsor Public Schools | East Windsor | Hartford County | | | North Central Connecticut Conference | |
| Ellington High School | Ellington Public Schools | Ellington | Tolland County | | | North Central Connecticut Conference | |
| Enfield High School | Enfield Public Schools | Enfield | Hartford County | | | North Central Connecticut Conference | |
| Enrico Fermi High School | Enfield Public Schools | Enfield | Hartford County | | | Central Connecticut Conference | |
| Fairfield High Schools Fitzgerald Campus | Fairfield Public Schools | Fairfield | Fairfield County | B | | | Commonly referred to as "Co-op" |
| Fairfield College Preparatory School | Private, Roman Catholic | Fairfield | Fairfield County | | | Southern Connecticut Conference | |
| Fairfield Ludlowe High School | Fairfield Public Schools | Fairfield | Fairfield County | B | | FCIAC | |
| Fairfield Warde High School | Fairfield Public Schools | Fairfield | Fairfield County | B | | FCIAC | |
| Notre Dame Catholic High School | Roman Catholic Diocese of Bridgeport | Fairfield | Fairfield County | | | South-West Conference | |
| Farmington High School | Farmington Public Schools | Farmington | Hartford County | | | Northwest Conference | |
| Tunxis Middle College High School | | Farmington | Hartford County | | | | |
| Miss Porter's School | | Farmington | Hartford County | | | | |
| Glastonbury High School | Glastonbury Public Schools | Glastonbury | Hartford County | B | | Central Connecticut Conference | |
| Grace S. Webb School | The Institute of Living | Hartford | Hartford County | | | | Special school |
| Granby Memorial High School | Granby Public Schools | Granby | Hartford County | B | | North Central Connecticut Conference | |
| Brunswick School | | Greenwich | Fairfield County | | | | |
| Greenwich High School | Greenwich Public Schools | Greenwich | Fairfield County | B | | FCIAC | |
| Griswold High School | Griswold Public Schools | Griswold | New London County | | | Eastern Connecticut Conference | |
| Fitch Senior High School | Groton Public Schools | Groton | New London County | G | | Eastern Connecticut Conference | |
| Grasso Southeastern Technical High School | Connecticut Technical High School System | Groton | New London County | | | Constitution State Conference | |
| Guilford High School | Guilford Public Schools | Guilford | New Haven County | B | | Southern Connecticut Conference | |
| Haddam-Killingworth High School | | Haddam | Middlesex County | C | | Shoreline Conference | Serves Haddam and Killingworth |
| Cedarhurst School | Private | Hamden | New Haven County | | | | 7th through 12th grades |
| Eli Whitney Technical High School | Connecticut Technical High School System | Hamden | New Haven County | | | Constitution State Conference | |
| Hamden Hall Country Day School | | Hamden | New Haven County | | | | |
| Hamden High School | Hamden Public Schools | Hamden | New Haven County | | | Southern Connecticut Conference | |
| Hyde Leadership School | | Hamden | New Haven County | | | Shoreline Conference | |
| Sacred Heart Academy | Roman Catholic Archdiocese of Hartford | Hamden | New Haven County | | | Southern Connecticut Conference | |
| A.I. Prince Technical High School | Connecticut Technical High School System | Hartford | Hartford County | | | Constitution State Conference | |
| Bulkeley High School | Hartford Public Schools | Hartford | Hartford County | | | Central Connecticut Conference | |
| Capital Preparatory Magnet School | | Hartford | Hartford County | | | Constitution State Conference | |
| Classical Magnet School | | Hartford | Hartford County | | | Constitution State Conference | Grades 6-12 |
| Greater Hartford Academy of Mathematics and Science | Capitol Region Education Council | Hartford | Hartford County | | | | |
| Hartford Magnet Trinity College Academy | Hartford Public Schools | Hartford | Hartford County | | | | |
| Hartford Public High School | Hartford Public Schools | Hartford | Hartford County | | | Central Connecticut Conference | |
| Sport and Medical Sciences Academy | | Hartford | Hartford County | | | Constitution State Conference | Grades 7-12 |
| University High School of Science | Hartford Public Schools and University of Hartford | Hartford | Hartford County | | | | |
| Watkinson School | | Hartford | Hartford County | | | | |
| Weaver High School | | Hartford | Hartford County | | | Central Connecticut Conference | |
| RHAM High School | Regional District 8 | Hebron | Tolland County | | | Northwest Conference | Also serves Andover and Marlborough |
| Kent School | | Kent | Litchfield County | | | | |
| Marvelwood School | | Kent | Litchfield County | | | | |
| South Kent School | | Kent | Litchfield County | | | | |
| H. H. Ellis Technical High School | Connecticut Technical High School System | Killingly | Tolland County | | | Constitution State Conference | |
| Killingly High School | Killingly Public Schools | Killingly | Windham County | | | Eastern Connecticut Conference | |
| Lyman Memorial High School | Lebanon School District | Lebanon | New London County | | | Eastern Connecticut Conference | |
| Ledyard High School | Ledyard Public Schools | Ledyard | New London County | | | Eastern Connecticut Conference | |
| Forman School | | Litchfield | Litchfield County | | | | |
| Litchfield High School | Litchfield Public Schools | Litchfield | Litchfield County | | | Berkshire League | 7th Grade to 12th Grade |
| Wamogo Regional High School | Regional School District 6 | Litchfield | Litchfield County | | | Berkshire League | 7th Grade to 12th Grade |
| Daniel Hand High School | Madison Public Schools | Madison | New Haven County | B | | Southern Connecticut Conference | |
| Grove School | | Madison | New Haven County | | | | |
| East Catholic High School | | Manchester | Hartford County | | | Northwest Conference | |
| Howell Cheney Technical High School | Connecticut Technical High School System | Manchester | Hartford County | | | | |
| Manchester High School | | Manchester | Hartford County | | | Central Connecticut Conference | |
| Manchester Regional Academy | | Manchester | Hartford County | | | | |
| E.O. Smith High School | Regional School District 19 | Storrs | Tolland County | | | Central Connecticut Conference | serves Ashford, Mansfield and Willington, as well as students from other nearby towns, such as Coventry and Windham, who participate in the school's Agriculture Education program; campus adjacent to the University of Connecticut campus |
| Francis T Maloney High School | Meriden Board of Education | Meriden | New Haven County | H | | Central Connecticut Conference | |
| Orville H. Platt High School | Meriden Board of Education | Meriden | New Haven County | H | | Central Connecticut Conference | |
| H.C. Wilcox Technical High School | Connecticut Technical High School System | Meriden | New Haven County | | | Constitution State Conference | |
| Westover School | | Middlebury | New Haven County | | | | |
| Long Lane School | | Middletown | Middlesex County | | | | |
| Mercy High School | Roman Catholic Diocese of Norwich | Middletown | Middlesex County | | | Southern Connecticut Conference | |
| Middletown High School | | Middletown | Middlesex County | | | Northwest Conference | |
| Vinal Technical High School | Connecticut Technical High School System | Middletown | Middlesex County | | | Constitution State Conference | |
| Xavier High School | | Middletown | Middlesex County | | | | |
| Joseph A. Foran High School | | Milford | New Haven County | | | Southern Connecticut Conference | |
| Jonathan Law High School | | Milford | New Haven County | | | Southern Connecticut Conference | |
| Milford Academy | | Milford | New Haven County | | | | |
| Academy of Our Lady of Mercy, Lauralton Hall | | Milford | New Haven County | | | South-West Conference | |
| Platt Technical High School | Connecticut Technical High School System | Milford | New Haven County | | | Constitution State Conference | |
| Masuk High School | | Monroe | Fairfield County | B | | South-West Conference | |
| Montville High School | | Montville | New London County | | | Eastern Connecticut Conference | |
| St. Bernard High School | | Montville | New London County | | | Eastern Connecticut Conference | |
| Nathan Hale Ray High School | | Moodus | Middlesex County | | | | |
| Naugatuck High School | | Naugatuck | New Haven County | G | | Naugatuck Valley League | |
| E. C. Goodwin Technical High School | Connecticut Technical High School System | New Britain | Hartford County | | | Constitution State Conference | |
| New Britain High School | | New Britain | Hartford County | I | | Central Connecticut Conference | |
| St. Luke's School | | New Canaan | Fairfield County | | | | |
| New Canaan High School | New Canaan Public Schools | New Canaan | Fairfield County | A | | FCIAC | |
| New Fairfield High School | | New Fairfield | Fairfield County | B | | South-West Conference | |
| Common Ground High School | Common Ground High School District | New Haven | New Haven County | | | | |
| Cooperative High School | Amistad Academy District | New Haven | New Haven County | | | | |
| High School in the Community | Amistad Academy District | New Haven | New Haven County | | | | |
| Hill Regional Career Magnet High School | Amistad Academy District | New Haven | New Haven County | | | | |
| James Hillhouse High School | Amistad Academy District | New Haven | New Haven County | I | | Southern Connecticut Conference | |
| Integrated Day Charter School | | Norwich | New London County | | | | |
| Hopkins School | Common Ground High School District | New Haven | New Haven County | | | | 7th Grade to 12th Grade |
| Polly T. McCabe Center | New Haven School District | New Haven | New Haven County | | | | 8th Grade to 12th Grade |
| Riverside Educational Academy | New Haven School District | New Haven | New Haven County | | | | |
| Sound School | New Haven School District | New Haven | New Haven County | | | | |
| Wilbur Cross High School | Amistad Academy District | New Haven | New Haven County | I | | Southern Connecticut Conference | 8th Grade to 12th Grade |
| New London High School | | New London | New London County | I | | Eastern Connecticut Conference | |
| The Williams School | | New London | New London County | | | | 7th Grade to 12th Grade |
| Canterbury School | | New Milford | Litchfield County | | | | |
| Faith Preparatory School | Faith Ministries, Inc. | New Milford | Litchfield County | | | Constitution State Conference | Pre-K to Grade 12; nondenominational Christian preparatory school |
| Connecticut Conservatory of Theatre School | | New Milford | Litchfield County | | | | |
| New Milford High School | | New Milford | Litchfield County | D | | South-West Conference | |
| Newington High School | | Newington | Hartford County | D | | Central Connecticut Conference | |
| Newtown High School | | Newtown | Fairfield County | B | | South-West Conference | |
| North Branford High School | | North Branford | New Haven County | E | | Shoreline Conference | |
| Collaborative Alternative Magnet School | Area Cooperative Educational Services | North Haven | New Haven County | D | | | Grades 7 - 10 |
| North Haven High School | | North Haven | New Haven County | D | | Southern Connecticut Conference | |
| Wheeler High School | | North Stonington | New London County | E | | Eastern Connecticut Conference | |
| Briggs High School | Norwalk Public Schools | Norwalk | Fairfield County | H | | | |
| Brien McMahon High School | Norwalk Public Schools | Norwalk | Fairfield County | H | | FCIAC | |
| Center for Global Studies | Norwalk Public Schools | Norwalk | Fairfield County | H | | FCIAC | At Brien McMahon High School |
| Norwalk High School | Norwalk Public Schools | Norwalk | Fairfield County | H | | FCIAC | |
| Norwich Free Academy | | Norwich | New London County | | | Eastern Connecticut Conference | |
| Thames River Academy (formerly Norwich High School) | | Norwich | New London County | H | | | |
| Norwich Technical High School | Connecticut Technical High School System | Norwich | New London County | | | Constitution State Conference | |
| Lyme-Old Lyme High School | | Old Lyme | New London County | C | | Shoreline Conference | Serves Lyme and Old Lyme |
| Old Saybrook Senior High School | | Old Saybrook | Middlesex County, Connecticut | D | | Shoreline Conference | |
| Oxford High School | | Oxford | New Haven County | | | South-West Conference | |
| Plainfield High School | | Central Village in Plainfield | Windham County | G | | Eastern Connecticut Conference | Also serves Sterling |
| Plainville High School | | Plainville | Hartford County | | | Northwest Conference | |
| Terryville High School | | Plymouth | Litchfield County | | | Berkshire League | |
| Pomfret School | | Pomfret | Windham County | | | | |
| Portland High School | | Portland | Middlesex County | E | | Shoreline Conference | |
| Putnam High School | | Putnam | Windham County | G | | Eastern Connecticut Conference | |
| Joel Barlow High School | Regional District 9 | Redding | Fairfield County | A | | South-West Conference | Also serves Easton |
| Ridgefield High School | Ridgefield School District | Ridgefield | Fairfield County | A | | | |
| Rocky Hill High School | | Rocky Hill | Hartford County | D | | Northwest Conference | |
| Hotchkiss School | Private, nonsectarian | Salisbury | Litchfield County | | Boarding | | |
| Salisbury School | Private | Salisbury | Litchfield County | | | | |
| Seymour High School | | Seymour | New Haven County | F | | Naugatuck Valley League | |
| Shelton High School | | Shelton | Fairfield County | D | | Southern Connecticut Conference | |
| Simsbury High School | | Simsbury | Hartford County | B | | Central Connecticut Conference | |
| Ethel Walker School | | Simsbury | Hartford County | | | | |
| The Master's School | | Simsbury | Hartford County | | | | |
| Westminster School | | Simsbury | Hartford County | | | | |
| Somers High School | | Somers | Tolland County | C | | North Central Connecticut Conference | |
| South Windsor High School | | South Windsor | Hartford County | B | | Central Connecticut Conference | |
| Pomperaug Regional High School | Pomperaug Regional School District 15 | Southbury | New HavenCounty | B | | South-West Conference | |
| Southington High School | | Southington | Hartford | D | | Central Connecticut Conference | |
| Academy of the Holy Family | | Sprague | New London County | | | | |
| Stafford High School | | Stafford Springs | Tolland County | | | | |
| Academy of Information Technology and Engineering | Stamford Public Schools | Stamford | Fairfield County | | | | |
| King Low Heywood Thomas | | Stamford | Fairfield County | | | | |
| Rippowam High School | Stamford Public Schools | Stamford | Fairfield County | | | | |
| Sacred Heart Academy | Private, Roman Catholic | Stamford | Fairfield County | | | | Closed |
| Stamford High School | Stamford Public Schools | Stamford | Fairfield County | H | | FCIAC | |
| Trinity Catholic High School | Roman Catholic Diocese of Bridgeport | Stamford | Fairfield County | | | FCIAC | |
| Westhill High School | Stamford Public Schools | Stamford | Fairfield County | H | | FCIAC | |
| J. M. Wright Technical High School | Connecticut Technical High School System | Stamford | Fairfield County | | | Constitution State Conference | |
| Yeshiva Bais Binyomin School | | Stamford | Fairfield County | | | | |
| Stonington High School | | Stonington | New London County | | | | |
| Frank Scott Bunnell High School | | Stratford | Fairfield County | | | South-West Conference | |
| Stratford High School | | Stratford | Fairfield County | | | South-West Conference | |
| Suffield Academy | | Suffield | Hartford County | | | | |
| Suffield High School | | Suffield | Hartford County | | | North Central Connecticut Conference | |
| Thomaston High School | | Thomaston | Litchfield County | | | Berkshire League | 7th Grade to 12th Grade |
| Marianapolis Preparatory School | Roman Catholic prep school governed by the Trinity Foundation | Thompson | Windham County | | Boarding | | |
| Tourtellotte Memorial High School | | Thompson | Windham County | | | Eastern Connecticut Conference | |
| Tolland High School | | Tolland | Tolland County | | | North Central Connecticut Conference | |
| Southeast School | | Torrington | Litchfield County | | | Naugatuck Valley League | |
| Torrington High School | Torrington Public Schools | Torrington | Litchfield County | | | Naugatuck Valley League | |
| Oliver Wolcott Technical High School | Connecticut Technical High School System | Torrington | Litchfield County | | | | |
| Christian Heritage School | | Trumbull | Fairfield County | B | | | |
| St. Joseph High School | Roman Catholic Diocese of Bridgeport | Trumbull | Fairfield County | | | FCIAC | |
| Trumbull High School | | Trumbull | Fairfield County | B | | | |
| Rockville High School | | Vernon | Tolland County | | | Central Connecticut Conference | |
| Choate Rosemary Hall | | Wallingford | New Haven County | | | | |
| Lyman Hall High School | | Wallingford | New Haven County | | | Southern Connecticut Conference | |
| Mark T. Sheehan High School | | Wallingford | New Haven County | | | Southern Connecticut Conference | |
| Shepaug Valley High School | | Washington | Litchfield County | | | Berkshire League | |
| Chase Collegiate School | | Waterbury | New Haven County | | | | |
| Crosby High School | Waterbury Public Schools | Waterbury | New Haven County | I | | Naugatuck Valley League | |
| Holy Cross High School | | Waterbury | New Haven County | | | Naugatuck Valley League | |
| W.F. Kaynor Technical High School | Connecticut Technical High School System | Waterbury | New Haven County | | | Constitution State Conference | |
| John F. Kennedy High School | Waterbury Public Schools | Waterbury | New Haven County | I | | Naugatuck Valley League | |
| Sacred Heart High School | | Waterbury | New Haven County | | | Naugatuck Valley League | |
| Waterbury Arts Magnet School | Waterbury Public Schools | Waterbury | New Haven County | | | | |
| Waterbury Catholic High School | | Waterbury | New Haven County | | | | |
| Wilby High School | Waterbury Public Schools | Waterbury | New Haven County | I | | Naugatuck Valley League | |
| Waterford High School | | Waterford | New London County | | | Eastern Connecticut Conference | |
| Taft School | | Watertown | Litchfield County | | Boarding | | |
| Watertown High School | | Watertown | Litchfield County | | | Naugatuck Valley League | |
| Conard High School | West Hartford Public Schools | West Hartford | Hartford County | B | | Central Connecticut Conference | |
| Hall High School | West Hartford Public Schools | West Hartford | Hartford County | B | | Central Connecticut Conference | |
| Hebrew High School of New England | | West Hartford | Hartford County | | | | |
| Kingswood-Oxford School | | West Hartford | Hartford County | | | | |
| Northwest Catholic High School | | West Hartford | Hartford County | | | | |
| Woodstock School | | West Hartford | Hartford County | | | | |
| Notre Dame High School | | West Haven | New Haven County | | | Southern Connecticut Conference | |
| West Haven High School | | West Haven | New Haven County | H | | Southern Connecticut Conference | |
| Westbrook High School | | Westbrook | Middlesex County | | | Shoreline Conference | |
| Weston High School | Weston Public Schools | Weston | Fairfield County | A | | South-West Conference | |
| Staples High School | | Westport | Fairfield County | A | | FCIAC | |
| Wethersfield High School | | Wethersfield | Hartford County | | | Central Connecticut Conference | |
| Wilton High School | Wilton Public Schools | Wilton | Fairfield County | A | | FCIAC | |
| Windham High School | | Windham | Windham County, Connecticut | I | | Eastern Connecticut Conference | Also serves Columbia |
| Windham Technical High School | Connecticut Technical High School System | Windham | Windham County | | | Constitution State Conference | |
| Loomis Chaffee School | | Windsor | Hartford County | | | | |
| Windsor High School | | Windsor | Hartford County | D | | Central Connecticut Conference | |
| Windsor Locks High School | | Windsor Locks | Hartford County | F | | North Central Connecticut Conference | |
| Explorations School | Explorations District | Winsted | Litchfield County | | | | |
| Gilbert School | | Winsted | Litchfield County | | | Berkshire League | |
| Northwestern Regional High School | | Winsted | Litchfield County | | | Berkshire League | |
| Wolcott High School | | Wolcott | New Haven | F | | Naugatuck Valley League | |
| Wolcott Technical High School | | Wolcott | New Haven | | | Berkshire League | |
| Amity Regional High School | Amity Regional District #5 | Woodbridge | New Haven | B | | Southern Connecticut Conference | Also serves Bethany and Orange |
| Marine Science Magnet High School | | Groton | New London | | | Eastern Connecticut Conference | |
| Nonnewaug High School | Regional School District 14 | Woodbury | Litchfield | | | Berkshire League | Also serves Bethlehem |
| Hyde School | | Woodstock | Windham County | | | | |
| Woodstock Academy | | Woodstock | Windham County | E | | Eastern Connecticut Conference | Serves Union, Woodstock, Eastford, Pomfret, Brooklyn |
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