Schools

• Saint John's School
  H.S. Math
• Saint Joseph High School Metuchen
  H.S. Math
• Saint Mary's School
  H.S. Mathematics
• Saint Maur International School
  H.S. Math
• San Dimas High School
  H.S. San Dimas Mathletes
• San Mateo High School
  H.S. Math
• Santa Fe Christian School
  H.S. Math Team
• 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
• Sidney High School
  H.S. Mathematics
• Skyline High School
  H.S. Math
• Smithtown High School West
  H.S. Math
• South Dade Senior High School
  H.S. Mu Alpha Theta
• South Lyon East High School
  H.S. Math
• South Tama County High School
  H.S. Math
• Spring Grove H.S.
  H.S. Math Team
• St. Bernard School
  M.S. Chi Alpha Mu
• St. John's School
  H.S. Mathematics
• St. Joseph H.S. (South Bend)
  H.S. Math Team
• St. Louis University High School
  H.S. Math
• St. Mark's School of Texas
  H.S. SMMT
• Stanford University Online H.S.
  H.S. Math Team
• Stevenson School
  H.S. Math Team