176 teams have registered:

• Adair County (Columbia, KY)
• Arcadia (Arcadia, CA)
• Baton Rouge Magnet (Baton Rouge, LA)
• Bay (Panama City, FL)
• Beaverhead County (Dillon, MT; SS)
• Bellaire (Bellaire, TX)
• Bentley (Lafayette, CA)
• Benton (Benton, AR)
• Bergen Academies (Hackensack, NJ)
• Bridgeport (Bridgeport, WV)
• Brindlee Mountain A (Guntersville, AL; SS)
• Brindlee Mountain B (Guntersville, AL; SS)
• Brookville (Brookville, PA; SS)
• Brookwood (Snellville, GA)
• C. Milton Wright A (Bel Air, MD)
• C. Milton Wright B (Bel Air, MD)
• California Crosspoint (Hayward, CA)
• Canfield (Canfield, OH)
• Cedar Shoals (Athens, GA)
• Chariton (Chariton, IA; SS)
• Charleston Catholic (Charleston, WV)
• Chaska (Chaska, MN)
• Christian Fellowship Homeschool (Edmond, OK)
• Christian Heritage (Riverdale, UT)
• Clayton Valley (Concord, CA)
• Collegiate School (Richmond, VA)
• Colton-Pierrepont (Colton, NY; SS)
• Columbus Academy (Gahanna, OH)
• Coronado (Henderson, NV)
• Corunna (Corunna, MI)
• Covenant Christian (Huntsville, AL)
• Culver A (Culver, IN)
• Culver B (Culver, IN)
• DeLaSalle (Minneapolis, MN)
• Detroit Catholic Central (Novi, MI)
• Detroit Country Day (Beverly Hills, MI)
• DeWitt (DeWitt, MI)
• Dorman A (Roebuck, SC)
• Dorman B (Roebuck, SC)
• Drummond A (Drummond, OK; SS)
• Drummond B (Drummond, OK; SS)
• Dunbar A (Lexington, KY)
• Dunbar B (Lexington, KY)
• E. O. Smith (Storrs-Mansfield, CT)
• East Brunswick (East Brunswick, NJ)
• East Lansing (East Lansing, MI)
• Eastlake (Chula Vista, CA)
• Eden Prairie A (Eden Prairie, MN)
• Eden Prairie B (Eden Prairie, MN)
• Eden Prairie C (Eden Prairie, MN)
• Edina (Edina, MN)
• Edison A (Huntington Beach, CA)
• Edison B (Huntington Beach, CA)
• Edmond Memorial (Edmond, OK)
• Edmond Santa Fe (Edmond, OK)
• Findlay (Findlay, OH)
• Fisher Catholic (Lancaster, OH)
• Fort Mill (Fort Mill, SC)
• Fort Smith Northside (Fort Smith, AR)
• Garfield Heights (Garfield Heights, OH)
• Georgetown Day (Washington, DC)
• Gonzaga (Washington, DC)
• Grosse Pointe North (Grosse Pointe Woods, MI)
• Half Hollow Hills West (Dix Hills, NY)
• Hardee A (Wauchula, FL)
• Hardee B (Wauchula, FL)
• Harker (San Jose, CA)
• Hartland (Hartland, MI)
• Helias (Jefferson City, MO)
• Hilldale (Muskogee, OK; SS)
• Hillsdale (Hillsdale, MI)
• Hollidaysburg (Hollidaysburg, PA)
• Hoover (Hoover, AL)
• Hopkins (Minnetonka, MN)
• Hume-Fogg (Nashville, TN)
• Hunter (New York, NY)
• Huntsville (Huntsville, AR; SS)
• Irondale (New Brighton, MN)
• James W. Robinson (Fairfax, VA)
• Juan Diego Catholic (Draper, UT)
• Kellenberg A (Uniondale, NY)
• Kellenberg B (Uniondale, NY)
• Kent City (Kent City, MI; SS)
• La Follette (Madison, WI)
• La Jolla (La Jolla, CA)
• LASA A (Austin, TX)
• LASA B (Austin, TX)
• Liberty (Liberty, MO)
• Little Rock Central (Little Rock, AR)
• Little Rock Christian (Little Rock, AR)
• Livonia Churchill (Livonia, MI)
• Loyola Academy (Wilmette, IL)
• Madisonville North Hopkins (Madisonville, KY)
• Maggie Walker Governor's School A (Richmond, VA)
• Maggie Walker Governor's School B (Richmond, VA)
• Maine South (Park Ridge, IL)
• Malvern (Malvern, AR; SS)
• Miami Valley (Dayton, OH)
• Middlesboro (Middlesboro, KY; SS)
• Minnetonka A (Minnetonka, MN)
• Minnetonka B (Minnetonka, MN)
• MLK Magnet (Nashville, TN)
• Montverde (Montverde, FL)
• Moravian Academy (Bethlehem, PA)
• Mounds Park (St. Paul, MN)
• Murray County (Chatsworth, GA)
• Mustang (Mustang, OK)
• New Boston Huron (New Boston, MI)
• New Trier (Winnetka, IL)
• Norcross (Norcross, GA)
• North Kansas City (North Kansas City, MO)
• Northmont (Clayton, OH)
• Novi A (Novi, MI)
• Novi B (Novi, MI)
• Oklahoma Bible Academy A (Enid, OK)
• Oklahoma Bible Academy B (Enid, OK)
• Orange County (Orange, VA)
• Orono A (Long Lake, MN)
• Orono B (Long Lake, MN)
• Oshkosh West (Oshkosh, WI)
• Ottawa Hills (Toledo, OH; SS)
• Paintsville (Paintsville, KY; SS)
• Parkview Arts and Science (Little Rock, AR)
• Penn A (Mishawaka, IN)
• Penn B (Mishawaka, IN)
• Poland Seminary (Poland, OH)
• Prosper (Prosper, TX; SS)
• Rancho Bernardo A (San Diego, CA)
• Rancho Bernardo B (San Diego, CA)
• Ransom Everglades (Coconut Grove, FL)
• Robbinsdale Armstrong A (Plymouth, MN)
• Robbinsdale Armstrong B (Plymouth, MN)
• Rockford Auburn (Rockford, IL)
• Roscommon (Roscommon, MI; SS)
• Rosemount (Rosemount, MN)
• Russell (Russell, KY; SS)
• Saint Joseph (South Bend, IN)
• Salisbury (Salisbury, NC)
• San Mateo (San Mateo, CA)
• Santa Monica (Santa Monica, CA)
• Savannah (Savannah, MO)
• Shady Side (Pittsburgh, PA)
• Shanghai American-Puxi (Shanghai, China)
• Simley (Inver Grove Heights, MN)
• Sioux Falls Home School (Sioux Falls, SD)
• Solon (Solon, OH)
• South Fork (Stuart, FL)
• Southeast Polk (Pleasant Hill, IA)
• St. Andrew's (Ridgeland, MS)
• St. John's (Houston, TX)
• St. Joseph Catholic (Ogden, UT)
• St. Paul Central (St. Paul, MN)
• State College A (State College, PA)
• State College B (State College, PA)
• Stow-Munroe Falls (Stow, OH)
• Stuyvesant (New York, NY)
• Thomas Jefferson Science & Tech A (Alexandria, VA)
• Thomas Jefferson Science & Tech B (Alexandria, VA)
• Tippecanoe (Tipp City, OH)
• Torrey Pines (San Diego, CA)
• Troy (Troy, MI)
• Unionville A (Kennett Square, PA)
• Unionville B (Kennett Square, PA)
• Walnut Hills (Cincinnati, OH)
• Walt Whitman A (Bethesda, MD)
• Walt Whitman B (Bethesda, MD)
• Walter Johnson (Bethesda, MD)
• Walton (Marietta, GA)
• Wayzata A (Plymouth, MN)
• Wayzata B (Plymouth, MN)
• West Bend-Mallard A (West Bend, IA; SS)
• West Bend-Mallard B (West Bend, IA; SS)
• White Cloud (White Cloud, MI; SS)
• Wilmington Charter A (Wilmington, DE)
• Wilmington Charter B (Wilmington, DE)
• Wilmington Charter C (Wilmington, DE)

The teams marked by “SS” are eligible for the Small School title.