192 teams have registered:

• Ames A (Ames, IA)
• Ames B (Ames, IA)
• Arcadia (Arcadia, CA)
• Ballard A (Louisville, KY)
• Ballard B (Louisville, KY)
• Bellarmine College Prep A (San Jose, CA)
• Bellarmine College Prep B (San Jose, CA)
• Benton (Benton, AR)
• Bergen Academies A (Hackensack, NJ)
• Bergen Academies B (Hackensack, NJ)
• Berkeley High (Berkeley, CA)
• Bettendorf (Bettendorf, IA)
• Brindlee Mountain (Guntersville, AL; SS)
• Bristow (Bristow, OK; SS)
• Brookwood A (Snellville, GA)
• Brookwood B (Snellville, GA)
• Buffalo Grove (Buffalo Grove, IL)
• Caesar Rodney (Camden, DE)
• Carbondale (Carbondale, IL)
• Cave Spring (Roanoke, VA)
• Chapin (El Paso, TX)
• Chaska (Chaska, MN)
• Chattahoochee A (Johns Creek, GA)
• Chattahoochee B (Johns Creek, GA)
• Christian Fellowship Homeschool (Edmond, OK)
• Christian Heritage (Riverdale, UT)
• Collegiate School (Richmond, VA)
• Covenant Christian (Huntsville, AL)
• Culver A (Culver, IN)
• Culver B (Culver, IN)
• Danville (Danville, KY; SS)
• DeLaSalle (Minneapolis, MN)
• Detroit Catholic Central A (Novi, MI)
• Detroit Catholic Central B (Novi, MI)
• Detroit Country Day (Beverly Hills, MI)
• DeWitt (DeWitt, MI)
• Dorman A (Roebuck, SC)
• Dorman B (Roebuck, SC)
• Dr. Phillips (Orlando, FL)
• Drummond (Drummond, OK; SS)
• Dunbar (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)
• Eden Prairie A (Eden Prairie, MN)
• Eden Prairie B (Eden Prairie, MN)
• Edison (Huntington Beach, CA)
• Edmond Memorial A (Edmond, OK)
• Edmond Memorial B (Edmond, OK)
• Edmond Santa Fe (Edmond, OK)
• El Paso (El Paso, TX)
• Fisher Catholic (Lancaster, OH)
• Flushing (Flushing, MI)
• Francis Howell Central (St. Charles, MO)
• Franklin A (El Paso, TX)
• Franklin B (El Paso, TX)
• Frenchtown (Frenchtown, MT; SS)
• Georgetown Day (Washington, DC)
• Glasgow (Glasgow, MO; SS)
• Grayson County (Leitchfield, KY)
• Green Hope (Cary, NC)
• Grosse Pointe North (Grosse Pointe Woods, MI)
• Haileyville (Haileyville, OK; SS)
• Half Hollow Hills West (Dix Hills, NY)
• Hanover (Hanover, NH)
• Hartland (Hartland, MI)
• Hilldale (Muskogee, OK; SS)
• Hollidaysburg (Hollidaysburg, PA)
• Hoover (Hoover, AL)
• Hopkins (Minnetonka, MN)
• Hume-Fogg (Nashville, TN)
• Inman (Inman, KS; SS)
• Irondale (New Brighton, MN)
• James W. Robinson (Fairfax, VA)
• Juan Diego Catholic (Draper, UT)
• Kate Smith DAR (Grant, AL; SS)
• Kellenberg A (Uniondale, NY)
• Kellenberg B (Uniondale, NY)
• Kent City (Kent City, MI; SS)
• La Crosse Logan A (La Crosse, WI)
• La Crosse Logan B (La Crosse, WI)
• La Jolla A (La Jolla, CA)
• La Jolla B (La Jolla, CA)
• Lafayette (Lafayette, LA)
• Lakeville North (Lakeville, MN)
• Lansing Catholic (Lansing, MI)
• Lansing Homeschoolers (Lansing, MI)
• LASA (Austin, TX)
• Liberty (Liberty, MO)
• Lisgar (Ottawa, ON, Canada)
• Livingston A (Livingston, NJ)
• Livingston B (Livingston, NJ)
• Louisiana Math & Science (Natchitoches, LA)
• Lowry (Winnemucca, NV)
• Loyola Academy A (Wilmette, IL)
• Loyola Academy B (Wilmette, IL)
• Maggie Walker Governor's School (Richmond, VA)
• Maine South (Park Ridge, IL)
• Malvern (Malvern, AR; SS)
• Marshalltown (Marshalltown, IA)
• Mercersburg Academy (Mercersburg, PA)
• Miami Valley (Dayton, OH)
• Minnetonka A (Minnetonka, MN)
• Minnetonka B (Minnetonka, MN)
• Mission San Jose A (Fremont, CA)
• Mission San Jose B (Fremont, CA)
• Mississippi Math and Science A (Columbus, MS)
• Mississippi Math and Science B (Columbus, MS)
• MLK Magnet (Nashville, TN)
• Moravian Academy (Bethlehem, PA)
• Mounds Park (St. Paul, MN)
• Muscatine (Muscatine, IA)
• New Boston Huron (New Boston, MI)
• New Trier (Winnetka, IL)
• Newtown (Sandy Hook, CT)
• Norcross (Norcross, GA)
• North Cedar (Stanwood, IA; SS)
• North Hollywood (North Hollywood, CA)
• North Kansas City (North Kansas City, MO)
• North White (Monon, IN; SS)
• Northmont (Clayton, OH)
• Novi A (Novi, MI)
• Novi B (Novi, MI)
• Ottawa Hills (Toledo, OH; SS)
• Parkview Arts and Science A (Little Rock, AR)
• Parkview Arts and Science B (Little Rock, AR)
• Parkway Central (Chesterfield, MO)
• Penn (Mishawaka, IN)
• Pensacola (Pensacola, FL)
• Plymouth (Canton, MI)
• Porter (Porter, OK; SS)
• Providence Day (Charlotte, NC)
• Rancho Bernardo A (San Diego, CA)
• Rancho Bernardo B (San Diego, CA)
• Ransom Everglades A (Coconut Grove, FL)
• Ransom Everglades B (Coconut Grove, FL)
• Rappahannock County (Washington, VA; SS)
• River Falls (River Falls, WI)
• Robinson (Concord, NC)
• Rockford Auburn (Rockford, IL)
• Rosemount (Rosemount, MN)
• Russell (Russell, KY; SS)
• Saint Agnes (St. Paul, MN)
• Saint Joseph (South Bend, IN)
• Saint Viator (Arlington Heights, IL)
• Salisbury (Salisbury, NC)
• Sand Rock (Sand Rock, AL; SS)
• Santa Monica (Santa Monica, CA)
• Santa Teresa (Santa Teresa, NM)
• Savannah (Savannah, MO)
• Shady Side (Pittsburgh, PA)
• Simley (Inver Grove Heights, MN)
• Simon Kenton (Independence, KY)
• Sioux Falls Home School (Sioux Falls, SD)
• Solon A (Solon, OH)
• Solon B (Solon, OH)
• South Burlington (South Burlington, VT)
• South Range (Canfield, OH; SS)
• Southern Fulton (Warfordsburg, PA; SS)
• Springfield (Springfield, IL)
• St. Andrew's (Ridgeland, MS)
• St. John's (Houston, TX)
• St. Joseph Catholic (Ogden, UT)
• St. Mark's School of Texas (Dallas, TX)
• State College A (State College, PA)
• State College B (State College, PA)
• Stillwater (Stillwater, OK)
• Stow-Munroe Falls (Stow, OH)
• Tarkio (Tarkio, MO; SS)
• Temple (Temple, TX)
• Thomas Edison A (Tulsa, OK)
• Thomas Edison B (Tulsa, OK)
• Thomas Jefferson Science & Tech A (Alexandria, VA)
• Thomas Jefferson Science & Tech B (Alexandria, VA)
• Timberlake (Helena, OK; SS)
• Torrey Pines (San Diego, CA)
• Troy (Troy, MI)
• Truman (Independence, MO)
• University High (Irvine, CA)
• Vermillion (Vermillion, SD; SS)
• Walnut Hills (Cincinnati, OH)
• Walter Johnson (Bethesda, MD)
• Walton (Marietta, GA)
• Wheaton Warrenville South (Wheaton, IL)
• White Cloud (White Cloud, MI; SS)
• Whittemore-Prescott (Whittemore, MI; SS)
• Williamson (Williamson, NY; 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.