160 teams have registered:

• Aaron Cohn (Midland, GA)
• Alphonsus Academy (Chicago, IL)
• Annunciation Orthodox A (Houston, TX)
• Annunciation Orthodox B (Houston, TX)
• Baldwin Arts & Academics (Montgomery, AL)
• Beacon Hill (Decatur, GA)
• Black Mountain A (San Diego, CA)
• Black Mountain B (San Diego, CA)
• Briarcliff (Mountain Lakes, NJ)
• Brown Summit A (Browns Summit, NC)
• Brown Summit B (Browns Summit, NC)
• Cedar Ridge (Decatur, AL)
• Challenger (Huntsville, AL)
• Challenger-Ardenwood (Newark, CA)
• Challenger-Berryessa A (San Jose, CA)
• Challenger-Berryessa B (San Jose, CA)
• Challenger-Strawberry Park (San Jose, CA)
• Chamblee A (Chamblee, GA)
• Chamblee B (Chamblee, GA)
• Churchill A (Carmichael, CA)
• Churchill B (Carmichael, CA)
• Columbia Independent (Columbia, MO)
• Copley-Fairlawn (Copley, OH)
• Coppell West (Dallas, TX)
• Creekland Cherokee A (Canton, GA)
• Creekland Cherokee B (Canton, GA)
• Creekland Gwinnett (Lawrenceville, GA)
• Dawkins (Moore, SC)
• Detroit Country Day A (Beverly Hills, MI)
• Detroit Country Day B (Beverly Hills, MI)
• Duluth (Duluth, GA)
• Edgewood (Mounds View, MN)
• Emerson (Ann Arbor, MI)
• Emerson (Davis, CA)
• Fairview A (Tallahassee, FL)
• Fairview B (Tallahassee, FL)
• Fallon (Dublin, CA)
• Five Forks (Lawrenceville, GA)
• Gadsden (Gadsden, AL)
• Garcia (San Antonio, TX)
• Harker (San Jose, CA)
• Henderson (Atlanta, GA)
• Holcomb Bridge (Alpharetta, GA)
• Holy Family (Austin, TX)
• Howard (Atlanta, GA)
• Hyde Park (Las Vegas, NV)
• Independence A (Newark, DE)
• Independence B (Newark, DE)
• Independence C (Newark, DE)
• Inola (Inola, OK)
• Itawamba (Fulton, MS)
• James Weldon Johnson A (Jacksonville, FL)
• James Weldon Johnson B (Jacksonville, FL)
• Jefferson (Jefferson, GA)
• Johnson County (Paintsville, KY)
• Kealing (Austin, TX)
• Keith Country Day (Rockford, IL)
• Killian Hill Christian (Lilburn, GA)
• Lake Center Christian (Hartville, OH)
• League City Intermediate (League City, TX)
• Lewis (Valparaiso, FL)
• Ligon (Raleigh, NC)
• Lively A (Austin, TX)
• Lively B (Austin, TX)
• Longfellow A (Falls Church, VA)
• Longfellow B (Falls Church, VA)
• Mannheim (Melrose Park, IL)
• Merrol Hyde (Hendersonville, TN)
• Mesa Verde (San Diego, CA)
• Metrolina (Charlotte, NC)
• Meyzeek (Louisville, KY)
• Miami Valley (Dayton, OH)
• Middlesex A (Darien, CT)
• Middlesex B (Darien, CT)
• Middlesex C (Darien, CT)
• Middlesex D (Darien, CT)
• Midtown Classical A (Tallahassee, FL)
• Midtown Classical B (Tallahassee, FL)
• Monrovia (Huntsville, AL)
• Montford (Tallahassee, FL)
• Morrison (Morrison, OK)
• Mounds Park (St. Paul, MN)
• Mount de Sales (Macon, GA)
• Mount Mourne (Mooresville, NC)
• NEAAAT (Elizabeth City, NC)
• Noe (Louisville, KY)
• Norfolk Academic Guild (Norfolk, VA)
• North Gwinnett (Sugar Hill, GA)
• Northwest Guilford (Greensboro, NC)
• Oak Park (Decatur, AL)
• Oak Valley A (San Diego, CA)
• Oak Valley B (San Diego, CA)
• Okaloosa STEMM (Valparaiso, FL)
• Olentangy Hyatts A (Powell, OH)
• Olentangy Hyatts B (Powell, OH)
• Paideia (Atlanta, GA)
• Parish Episcopal (Dallas, TX)
• Pi-oneers A (Cupertino, CA)
• Pi-oneers B (Cupertino, CA)
• Pickens Academy (Carrollton, AL)
• Pizitz (Vestavia Hills, AL)
• Providence (Plymouth, MN)
• Quest Academy (Palatine, IL)
• Ramalynn A (Bloomington, MN)
• Ramalynn B (Bloomington, MN)
• Randolph (Huntsville, AL)
• Ransom (Cantonment, FL)
• Rawlinson (San Antonio, TX)
• Richmond A (Hanover, NH)
• Richmond B (Hanover, NH)
• River Dell (River Edge, NJ)
• River Trail A (Johns Creek, GA)
• River Trail B (Johns Creek, GA)
• River Trail C (Johns Creek, GA)
• River Trail D (Johns Creek, GA)
• Roosevelt (Erie, PA)
• Ruckel (Niceville, FL)
• Sacred Heart Homeschool (Tallahassee, FL)
• Seventy-First Classical (Fayetteville, NC)
• Smith (Chapel Hill, NC)
• Smith (Troy, MI)
• Smiths Station (Smiths Station, AL)
• Somerset (Somerset, PA)
• Springwood (Lanett, AL)
• St. Anselm's (Washington, DC)
• St. Augustine (Elkridge, MD)
• St. Croix Catholic (Stillwater, MN)
• St. John's A (Houston, TX)
• St. John's B (Houston, TX)
• St. John's C (Houston, TX)
• St. Mark (Plano, TX)
• St. Mark's School of Texas (Dallas, TX)
• St. Michael A (Livonia, MI)
• St. Michael B (Livonia, MI)
• St. Monica (Dallas, TX)
• St. Patrick (White Lake, MI)
• St. Theresa's (Austin, TX)
• St. Thomas' Episcopal (Houston, TX)
• T. H. Rogers A (Houston, TX)
• T. H. Rogers B (Houston, TX)
• T. H. Rogers C (Houston, TX)
• Taylor Road (Johns Creek, GA)
• Teaneck Charter (Teaneck, NJ)
• Tenafly A (Tenafly, NJ)
• Tenafly B (Tenafly, NJ)
• Tuscumbia (Tuscumbia, MO)
• Tuxedo Park (Tuxedo Park, NY)
• University School (Hunting Valley, OH)
• Village (Houston, TX)
• Washington A (Washington, MO)
• Washington B (Washington, MO)
• Webb Bridge (Alpharetta, GA)
• West (Columbia, MO)
• Western (Greenwich, CT)
• Westminster (Atlanta, GA)
• Westmont Hilltop A (Johnstown, PA)
• Westmont Hilltop B (Johnstown, PA)
• White Station (Memphis, TN)
• Wilburton (Wilburton, OK)
• Winburn (Lexington, KY)

There is a waitlist:

1. Emerald Coast (Santa Rosa Beach, FL)
2. Clinton (Clinton, SC)

The field is limited to 160 teams.