128 teams have registered:

• Adlai E. Stevenson (Lincolnshire, IL)
• Ames (Ames, IA)
• Apollo (Owensboro, KY)
• Arcadia (Arcadia, CA)
• Ashtabula Lakeside (Ashtabula, OH)
• Beau Chene (Arnaudville, LA)
• Bellaire A (Bellaire, TX)
• Bellaire B (Bellaire, TX)
• Bentley (Lafayette, CA)
• Benton (Benton, AR)
• Bloomfield (Bloomfield, NJ)
• Bolton (Arlington, TN)
• Booker T. Washington (Tulsa, OK)
• Brindlee Mountain A (Guntersville, AL; SS)
• Brindlee Mountain B (Guntersville, AL; SS)
• Bristow (Bristow, OK)
• Brookwood (Snellville, GA)
• Cary Academy (Cary, NC)
• Cave Spring (Roanoke, VA)
• Central Hardin (Cecilia, KY)
• Chattahoochee (Johns Creek, GA)
• Christian Fellowship Homeschool (Edmond, OK)
• Cistercian (Irving, TX)
• Columbus Academy A (Gahanna, OH)
• Columbus Academy B (Gahanna, OH)
• Covenant Christian (Huntsville, AL)
• Cretin-Derham Hall (St. Paul, MN)
• Danville (Danville, KY; SS)
• Detroit Catholic Central (Novi, 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)
• duPont Manual A (Louisville, KY)
• duPont Manual B (Louisville, KY)
• E. O. Smith (Storrs-Mansfield, CT)
• East Brunswick (East Brunswick, NJ)
• East Lansing (East Lansing, MI)
• Edison A (Huntington Beach, CA)
• Edison B (Huntington Beach, CA)
• Edmond Memorial (Edmond, OK)
• Fort Mill (Fort Mill, SC)
• Garfield Heights (Garfield Heights, OH)
• Greeley Scholars (SS)
• Grosse Pointe North (Grosse Pointe Woods, MI)
• Hammond (Columbia, MD)
• Hartland (Hartland, MI)
• Holmes County (Bonifay, FL; SS)
• James W. Robinson (Fairfax, VA)
• Jefferson City Wizards (Jefferson City, MO)
• Juan Diego Catholic (Draper, UT)
• Kent City (Kent City, MI; SS)
• Keystone Oaks (Pittsburgh, PA)
• Kimball (Royal Oak, MI)
• Knoxville Christian (Knoxville, TN)
• La Crosse Logan (La Crosse, WI)
• La Jolla A (La Jolla, CA)
• La Jolla B (La Jolla, CA)
• Lafayette (Lafayette, LA)
• Lakeside (Seattle, WA)
• Lisgar (Ottawa, ON, Canada)
• Livingston (Livingston, NJ)
• Loyola Academy (Wilmette, IL)
• LSU Lab (Baton Rouge, LA)
• Maggie Walker Governor's School A (Richmond, VA)
• Maggie Walker Governor's School B (Richmond, VA)
• Maggie Walker Governor's School C (Richmond, VA)
• Malvern (Malvern, AR; SS)
• Mayfield (Las Cruces, NM)
• McQuaid Jesuit (Rochester, NY)
• Middlebury Union (Middlebury, VT)
• Millburn (Millburn, NJ)
• Minnetonka A (Minnetonka, MN)
• Minnetonka B (Minnetonka, MN)
• Minnetonka C (Minnetonka, MN)
• Mission San Jose (Fremont, CA)
• MLK Magnet (Nashville, TN)
• Monta Vista (Cupertino, CA)
• Moravian Academy (Bethlehem, PA)
• Mounds Park (St. Paul, MN)
• Mount Vernon-Enola (Mount Vernon, AR; SS)
• Mustang (Mustang, OK)
• New Trier (Winnetka, IL)
• North Allegheny (Pittsburgh, PA)
• Novi (Novi, MI)
• Ocean Lakes (Virginia Beach, VA)
• Oshkosh West (Oshkosh, WI)
• Parkview Arts and Science (Little Rock, AR)
• Pensacola (Pensacola, FL)
• Plano East (Plano, TX)
• Regina A (Iowa City, IA)
• Regina B (Iowa City, IA)
• Richard Montgomery (Rockville, MD)
• San Dieguito (Encinitas, CA)
• Santa Monica (Santa Monica, CA)
• Shady Side (Pittsburgh, PA)
• Shanghai American-Puxi (Shanghai, China)
• Sioux Falls Home School (Sioux Falls, SD)
• South Medford (Medford, OR)
• Southeast Polk (Pleasant Hill, IA)
• St. Andrew's (Ridgeland, MS)
• St. Charles A (Bexley, OH)
• St. Charles B (Bexley, OH)
• St. John's (Houston, TX)
• St. Thomas Academy (Mendota Heights, MN)
• State College A (State College, PA)
• State College B (State College, PA)
• Strake Jesuit (Houston, TX)
• Stuyvesant (New York, NY)
• Temple (Temple, TX)
• Thomas Jefferson Science & Tech A (Alexandria, VA)
• Thomas Jefferson Science & Tech B (Alexandria, VA)
• Thomas Jefferson Science & Tech C (Alexandria, VA)
• Tippecanoe (Tipp City, OH)
• Torrey Pines (San Diego, CA)
• Troy (Troy, MI)
• Vanguard (Ocala, FL)
• Wagoner (Wagoner, OK; SS)
• Walnut Hills (Cincinnati, OH)
• Walt Whitman (Bethesda, MD)
• Walter Johnson (Bethesda, MD)
• Wayzata (Plymouth, MN)
• Webb School (Bell Buckle, TN)
• White Cloud (White Cloud, MI; SS)
• Wilmington Charter A (Wilmington, DE)
• Wilmington Charter B (Wilmington, DE)

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