160 teams have registered:

• Academy at Lincoln (Greensboro, NC)
• Adams (Fulshear, TX)
• Advent Episcopal (Birmingham, AL)
• Anderson A (New York, NY)
• Anderson B (New York, NY)
• Annunciation Orthodox (Houston, TX)
• Arab A (Arab, AL)
• Arab B (Arab, AL)
• Avery Trace (Cookeville, TN)
• Baldwin Arts & Academics (Montgomery, AL)
• BASIS McLean (McLean, VA)
• Beck (Katy, TX)
• Beckendorff (Katy, TX)
• Boulan Park (Troy, MI)
• Brentwood (Brentwood, TN)
• Brown Summit (Browns Summit, NC)
• Burleigh Manor A (Ellicott City, MD)
• Burleigh Manor B (Ellicott City, MD)
• Burleigh Manor C (Ellicott City, MD)
• Caddo (Shreveport, LA)
• Challenger-Ardenwood (Newark, CA)
• Challenger-Berryessa A (San Jose, CA)
• Challenger-Berryessa B (San Jose, CA)
• Challenger-Strawberry Park A (San Jose, CA)
• Challenger-Strawberry Park B (San Jose, CA)
• Chapin School A (Princeton, NJ)
• Chapin School B (Princeton, NJ)
• Chisholm (Enid, OK)
• Churchill A (Carmichael, CA)
• Churchill B (Carmichael, CA)
• Churchill C (Carmichael, CA)
• Churchill D (Carmichael, CA)
• Cistercian (Irving, TX)
• Clarksville (Clarksville, MD)
• Classen SAS (Oklahoma City, OK)
• Columbia Independent A (Columbia, MO)
• Columbia Independent B (Columbia, MO)
• Columbia Independent C (Columbia, MO)
• Columbiana (Columbiana, AL)
• Colvin Run Elementary (Vienna, VA)
• Cooper A (McLean, VA)
• Cooper B (McLean, VA)
• Detroit Country Day (Beverly Hills, MI)
• Edgewood A (Mounds View, MN)
• Edgewood B (Mounds View, MN)
• Emerson A (Ann Arbor, MI)
• Emerson B (Ann Arbor, MI)
• Finan Homeschool (Newcastle, WA)
• Fort Morgan (Fort Morgan, CO)
• Gadsden (Gadsden, AL)
• Gorzycki A (Austin, TX)
• Gorzycki B (Austin, TX)
• Great Valley (Malvern, PA)
• Greenhill A (Addison, TX)
• Greenhill B (Addison, TX)
• Greenhill C (Addison, TX)
• Greenhill D (Addison, TX)
• Heritage A (Livingston, NJ)
• Heritage B (Livingston, NJ)
• Heritage C (Livingston, NJ)
• Hopkins A (Fremont, CA)
• Hopkins B (Fremont, CA)
• Howard A (Atlanta, GA)
• Howard B (Atlanta, GA)
• Hunter (New York, NY)
• Immaculate Conception St. Joseph A (Chicago, IL)
• Immaculate Conception St. Joseph B (Chicago, IL)
• Immanuel Lutheran Wentzville (Wentzville, MO)
• Johnson (Fairfax, VA)
• Johnson County (Paintsville, KY)
• Keith Country Day (Rockford, IL)
• King (Milton, FL)
• Liberty (Madison, AL)
• Longfellow (Falls Church, VA)
• Meadows A (Las Vegas, NV)
• Meadows B (Las Vegas, NV)
• Meadows C (Las Vegas, NV)
• Menlo Park Academy (Cleveland, OH)
• Merrol Hyde A (Hendersonville, TN)
• Merrol Hyde B (Hendersonville, TN)
• Meyzeek A (Louisville, KY)
• Meyzeek B (Louisville, KY)
• Middlesex A (Darien, CT)
• Middlesex B (Darien, CT)
• Middlesex C (Darien, CT)
• Midtown Classical (Tallahassee, FL)
• Minnetonka East (Minnetonka, MN)
• Monrovia (Huntsville, AL)
• Morris (Morris, OK)
• Mount Pleasant (Livingston, NJ)
• Next Generation (Champaign, IL)
• Noe (Louisville, KY)
• North Gwinnett A (Sugar Hill, GA)
• North Gwinnett B (Sugar Hill, GA)
• Oak Valley (San Diego, CA)
• Ocean Grove (Placerville, CA)
• Old Donation (Virginia Beach, VA)
• Olympus (Roseville, CA)
• Overlake (Redmond, WA)
• Perry (Worthington, OH)
• Plymouth (Plymouth, MN)
• Pope John XXIII (Evanston, IL)
• Providence (Plymouth, MN)
• Quest Academy (Palatine, IL)
• Rainbow (Rainbow City, AL)
• Rancho Milpitas (Milpitas, CA)
• Redwood (Saratoga, CA)
• River Trail A (Johns Creek, GA)
• River Trail B (Johns Creek, GA)
• Riverwatch A (Suwanee, GA)
• Riverwatch B (Suwanee, GA)
• Riverwatch C (Suwanee, GA)
• Roxboro (Cleveland Heights, OH)
• Seoul Foreign A (Seoul, South Korea)
• Seoul Foreign B (Seoul, South Korea)
• Smith A (Chapel Hill, NC)
• Smith B (Chapel Hill, NC)
• Solon A (Solon, OH)
• Solon B (Solon, OH)
• Somerset Lone Mountain (Las Vegas, NV)
• South East (Iowa City, IA)
• Spectrum (Elk River, MN)
• Spiritus Sanctus (Plymouth, MI)
• Springfield Franklin A (Springfield, IL)
• Springfield Franklin B (Springfield, IL)
• Springfield Franklin C (Springfield, IL)
• St. Benedict (Chicago, IL)
• St. Charles Borromeo (Coldwater, MI)
• St. Hilary (Fairlawn, OH)
• St. John's A (Houston, TX)
• St. John's B (Houston, TX)
• St. Josaphat (Chicago, IL)
• St. Louis Park (St. Louis Park, MN)
• St. Mark (Plano, TX)
• St. Mark's School of Texas A (Dallas, TX)
• St. Mark's School of Texas B (Dallas, TX)
• St. Mary's Episcopal (Memphis, TN)
• St. Michael (Livonia, MI)
• St. Michael (Crowley, LA)
• St. Norbert (Northbrook, IL)
• St. Rita (Dallas, TX)
• St. Therese (Kansas City, MO)
• St. Thomas' Episcopal (Houston, TX)
• Strong Vincent (Erie, PA)
• Sycamore A (Indianapolis, IN)
• Sycamore B (Indianapolis, IN)
• T. H. Rogers A (Houston, TX)
• T. H. Rogers B (Houston, TX)
• Thurgood Marshall (Rockford, IL)
• University School (Hunting Valley, OH)
• University School (Tulsa, OK)
• University School of Nashville A (Nashville, TN)
• University School of Nashville B (Nashville, TN)
• Wayzata Central A (Plymouth, MN)
• Wayzata Central B (Plymouth, MN)
• White Station (Memphis, TN)
• Williamston A (Williamston, MI)
• Williamston B (Williamston, MI)
• Winburn (Lexington, KY)
• Yongsan International (Seoul, South Korea)

There is a waitlist:

1. Mounds Park (St. Paul, MN)
2. St. Mark's School of Texas C (Dallas, TX) (Dallas, TX)
3. Hopkins C (Fremont, CA)
4. St. Viator (Chicago, IL)
5. River Trail C (Johns Creek, GA)
6. Timberline (Waukee, IA)
7. Dougherty Elementary (Edmond, OK)

Teams must qualify for this event.

The field is limited to 160 teams.