Oakville Middle
Oakville SR. High
Oakwood ELEM.
Oakwood Manor ELEM.
Odessa High
Odessa Middle
Odessa Upper ELEM.
Old Bonhomme ELEM.
Old North
Oran ELEM.
Oran High
Orchard Drive ELEM.
Orchard Farm ELEM.
Orchard Farm Middle
Orchard Farm SR. High
Orearville ELEM.
Orrick ELEM.
Orrick High
Osage Beach ELEM.
Osage CO. ELEM.