| | | | | |
| Athens Area HS | C | 2 | | Bradford | PA |
| Bayard Rustin High School | C | 2 | Mini Satellite Hybrid SO Regional | Chester | PA |
| Bergen County Academies (HS) | C | 1 | | Bergen | NJ |
| Carmel High School | C | 2 | INSO Satellite Regional #2 | Hamilton | IN |
| Cherry Hill East High School | C | 2 | Camden | Camden | NJ |
| Collegiate School | C | 2 | | Manhattan (New York County) | NY |
| Cumberland Valley High School | C | 3 | Mini Satellite Hybrid SO Regional | Cumberland | PA |
| Dulles | C | 2 | Texas A&M Galvestion | Harris | TX |
| Fox Homeschoolers | C | 1 | Division C Regional | DuPage, IL | IL |
| Green Hope High School | C | 1 | | Wake County | NC |
| Harriton High School | C | 1 | Mini Satellite Hybrid SO Regional | Montgomery County | PA |
| Hillsborough HS | C | 2 | | Somerset County | NJ |
| Lake Braddock High School | C | 1 | Virginia Science Olympiad | Fairfax | VA |
| Longmeadow High School | C | 1 | | Hampden County | MA |
| Lyme-Old Lyme High School | C | 1 | NA | New London | CT |
| Middlesex County Academy for Science, Mathematics & Engineering Technologies (HS) | C | 1 | | Middlesex | NJ |
| National Cathedral School Div. C | C | 1 | | Washington DC | DC |
| Northville High School | C | 1 | | Wayne County | MI |
| Norwin High School | C | 1 | Mini Satellite Hybrid SO Regional | Westmoreland | PA |
| Parkland High School | C | 2 | Mini Satellite Hybrid SO Regional | Lehigh County | PA |
| Quaker Valley High School | C | 1 | Mini Satellite Hybrid SO Regional | Allegheny | PA |
| Sacred Heart Greenwich | C | 1 | CT Regional 1 | Fairfield County | CT |
| Saint Anthony's High School | C | 1 | St. Anthony's High School | Suffolk County | NY |
| Saline High School | C | 2 | MI Regional 09 | Washtenaw County | MI |
| Scarsdale High School | C | 1 | Lower Hudson VAlle | Westchester | NY |
| St. Joseph's Collegiate Institute | C | 2 | Lake Erie/Niagara | Erie | NY |
| State College Area High School | C | 2 | PA Central | Centre | PA |
| Strath Haven High School | C | 1 | Mini Satellite Hybrid SO Regional | Delaware | PA |
| Thomas Jefferson High School for Science and Technology | C | 3 | | Fairfax | VA |
| Townsend Harris High School | C | 3 | New York | Queens | NY |
| Walter Payton College Prep | C | 2 | Division C Regional | Cook County | IL |
| West High (Torrance) | C | 2 | Los Angeles - South | Los Angeles | CA |
| William G. Enloe High School | C | 1 | North Carolina | Wake | NC |