Keystone Christian Academy - Act Justly          Love Mercy        Walk Humbly

Location and Directions 
Greenbrier Montessori is conveniently located in O'Fallon Missouri.  We are positioned off of Technology Drive (the outer road to Hwy 40) centered between Hwy K and Winghaven Blvd.  Our preschool is right down the street from GymQuarters, two doors from  Westinn Kennels and directly across the street from John Weldon Elementary (a Francis Howell School).

7375 Weldon Spring Road
O'Fallon, MO 63368

Mon - Fri: 6:30AM - 6PM
Sat and Sun: Closed

  • Beautiful 2 acre campus with 1 acre fully fenced retreat like playground setting
  • Conveniently located between Highway K and Winghaven Blvd on Weldon Spring Road
  • Easy on and off access to Hwy 40
  • Local businesses in the area include:
  • Progress West Hospital, MasterCard, Citi Mortgage, Enterprise Leasing, GymQuarters
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