Schools

• Sage Hill School
  H.S. Mathematics
• Saint Anselm's Abbey School
  H.S. Mathematics
• Saint Edward's School
  H.S. Mathematics
• Saint Joseph High School Metuchen
  H.S. Math
• Saint Mark's High School
  H.S. Math
• Saint Mary's School
  H.S. Mathematics
• San Dimas High School
  H.S. San Dimas Mathletes
• San Mateo High School
  H.S. Math
• Santa Fe Christian School
  H.S. Math Team
• Saugus High
  H.S. Math
• Scarsdale High School
  H.S. Math Team
• School Without Walls
  H.S. Math
• Scottsbluff High School
  H.S. Scottsbluff
• Seattle Preparatory school
  H.S. Mathematics
• Secaucus High School
  H.S. Math
• Shoreham-Wading River H.S.
  H.S. Math Team
• Sidney High School
  H.S. Mathematics
• Skaneateles
  H.S. Math
• Skyline High School
  H.S. Math
• Smithtown High School West
  H.S. Math
• South Broward High School
  H.S. MAO
• South Dade Senior High School
  H.S. Mu Alpha Theta
• Southside Christian School
  H.S. Math
• Spencerport H.S.
  H.S. Math Team
• Spring Grove H.S.
  H.S. Math Team
• St. Ann's School
  H.S. Math Team
• St. Bernard School
  H.S. Mu Alpha Theta
• St. John's School
  H.S. Mathematics
• St. Johnsbury Academy
  H.S. Math
• St. Joseph H.S. (South Bend)
  H.S. Math Team
• St. Mark's School
  H.S. Math
• St. Mark's School of Texas
  H.S. SMMT Team M
• Stanford University Online H.S.
  H.S. Math Team
• Steinbrenner High School
  H.S. Math
• Stevenson School
  H.S. Math Team
• Stockdale High School
  H.S. Mathematics