Delaware

History
Delaware has been sending teams to the National Science Olympiad since back in 1985. Its teams generally fare well at nationals. Since 2000, Henry B. du Pont Middle School has utterly destroyed all competition in the B Division, while The Charter School of Wilmington controls Division C. The Charter School of Wilmington particularly does well, placing consistently in the top 20 at nationals.

Past State Champions
This is a record of the past state champions and runners up, and their respective places at the national competition, if applicable. Scores at the state competition may be shown in parentheses.

Division C

 * 2015 location: Delaware State University - Dover, March 7, 2015

Division B

 * 2015 location: Delaware State University - Dover, March 21, 2015

Division B

 * Alfred G. Waters Middle School
 * Brandywine Springs Middle School
 * Cab Calloway School of the Arts
 * Caravel Academy
 * Christ the Teacher Catholic School
 * Conrad Schools of Science
 * Corpus Christi Middle School
 * Delmar Middle School
 * Gauger-Cobbs Middle School
 * George Read Middle School
 * Glasgow Christian Academy Middle School
 * Henry B. du Pont Middle School
 * Holy Angels Middle School
 * Immaculate Heart of Mary School
 * Independence Middle School
 * Kirk Middle School
 * P.S. duPont Middle School
 * Phillis Wheatley Middle School
 * Redding Middle School
 * Red Lion Christian Academy Middle School
 * Saint Anne's Episcopal School
 * Saint Edmond's Academy
 * Saint Mary Magdalen Middle School
 * Saint Matthew School
 * Saint Peter Catholic School
 * Shue-Medill Middle School
 * Skyline Middle School
 * Springer Middle School
 * Sussex Academy of Arts and Sciences
 * Talley Middle School
 * Towle Institute Middle School
 * Tri-State Homeschool
 * Ursuline Academy Middle School
 * Wilmington Christian School
 * Wilmington Friends Middle School

Division C

 * Alfred I. duPont High School
 * Appoquinimink High School
 * Archmere Academy
 * Cab Calloway School of the Arts
 * Caesar Rodney High School
 * Cape Henlopen High School
 * Caravel Academy
 * Concord High School
 * Conrad Schools of Science
 * Delaware Military Academy
 * Delcastle Technical High School
 * Delmar Senior High School
 * Delmarva Christian High School
 * Dover High School
 * Hogdson Vocational Technical High School
 * John Dickinson High School
 * Lake Forest High School
 * Laurel Senior High School
 * Middletown High School
 * Newark High School
 * Padua Academy
 * Pencader Charter High School
 * Polytech High School
 * Red Lion Christian Academy High School
 * Saint Elizabeth High School
 * Saint Mark's High School
 * Salesianum School
 * Sanford School
 * Seaford Senior High School
 * Sussex Central High School
 * Sussex Technical High School
 * The Charter School of Wilmington
 * Towle Institute High School
 * Tri-State Homeschool
 * Ursuline Academy High School
 * William Penn High School
 * Wilmington Friends High School