List of high schools in Greater St. Louis

New Haven School District

• New Haven High School

Meramec Valley School District

• Pacific High School

St. Clair School District

• St. Clair High School

Sullivan School District

• Sullivan High School

Union School District

• Union High School

Washington School District

• Washington High School

Crystal City School District

• Crystal City High School

De Soto School District

• De Soto Senior High School

Festus School District

• Festus High School

Fox School District

• Fox High School
• Seckman High School

Herculaneum School District

• Herculaneum High School

Hillsboro School District

• Hillsboro High School

Jefferson R-7 School District

• Jefferson R-VII High School

Northwest School District

• Northwest High School

Elsberry School District

• Elsberry High School

Lincoln County R-III School District

• Troy Buchanan High School

Silex School District

• Silex High School

Windsor C-1 School District

• Windsor C-1 High School

Fort Zumwalt School District

• Fort Zumwalt East High School
• Fort Zumwalt North High School
• Fort Zumwalt South High School
• Fort Zumwalt West High School

Francis Howell School District

• Francis Howell High School
• Francis Howell Central High School
• Francis Howell North High School
• Francis Howell Union High School

Orchard Farm School District

• Orchard Farm High School

St. Charles School District

• St. Charles High School
• St. Charles West High School

Wentzville School District

• Wentzville Holt High School
• Wentzville Liberty High School
• Timberland High School
• North Point High School

Affton School District

• Affton High School

Bayless School District

• Bayless Senior High School

Brentwood School District

• Brentwood High School

Clayton School District

• Clayton High School

Ferguson-Florissant School District

• McCluer High School
• McCluer North High School
• STEAM Academy at McCluer South-Berkeley

Hancock Place School District

• Hancock Senior High School

Hazelwood School District

• Hazelwood Central High School
• Hazelwood East High School
• Hazelwood West High School

Jennings School District

• Jennings High School

Kirkwood School District

• Kirkwood High School

Ladue School District

• Ladue Horton Watkins High School

Lindbergh School District

• Lindbergh High School

Maplewood Richmond Heights School District

• Maplewood Richmond Heights High School

Mehlville School District

• Mehlville High School
• Oakville High School

Normandy School District

• Normandy High School

Parkway School District

• Fern Ridge High School
• Parkway Central High School
• Parkway North High School
• Parkway South High School
• Parkway West High School

Pattonville School District

• Pattonville High School

Ritenour School District

• Ritenour High School

Riverview Gardens School District

• Riverview Gardens Senior High School

Rockwood School District

• Eureka High School
• Lafayette High School
• Marquette High School
• Rockwood Summit High School

University City School District

• University City High School

Valley Park School District

• Valley Park High School

Webster Groves School District

• Webster Groves High School

Charter schools

• BELIEVE Academy by BELIEVE Schools^[1]
• Confluence Academy
• Gateway Science Academy
• Lift For Life Academy
• St. Louis Language Immersion School: The Spanish School
• KIPP: St Louis

St. Louis Public Schools

Warren County School District

• Warrenton High School

Wright City School District

• Wright City High School

Kingston School District

• Kingston High School

Potosi School District

• Potosi High School

Valley School District

• Valley High School

Archdiocese of St. Louis

• Bishop DuBourg High School
• Cardinal Ritter College Prep High School
• Duchesne High School
• John F. Kennedy High School (Closed in May 2017)
• Rosati-Kain High School
• St. Dominic High School
• St. Francis Borgia Regional High School
• St. Mary's High School
• St. Pius X High School
• Trinity Catholic High School (Closed in May 2021)

Diocese of Belleville

• Althoff Catholic High School
• Gibault Catholic High School
• Mater Dei High School

Diocese of Springfield (Illinois)

• Father McGivney Catholic High School
• Marquette Catholic High School

Private

• Providence Classical Christian Academy
• Chaminade College Preparatory School
• Chesterton Academy of St. Louis
• Christian Brothers College High School
• Cor Jesu Academy
• De Smet Jesuit High School
• Incarnate Word Academy
• Nerinx Hall High School
• Notre Dame High School
• St. Elizabeth Academy (closed May 2013).^[4]
• St. John Vianney High School
• St. Joseph's Academy
• Saint Louis Priory School
• Saint Louis University High School
• Ursuline Academy
• Villa Duchesne
• Visitation Academy of St. Louis