Oak Park Elementary School
Oakdale-bohemia Middle School
Oakwood Primary Center
Ocean Avenue School
Oldfield Middle School
Oquenock Elementary School
Oregon Middle School
Otsego Elementary School
Our Lady Of Lourdes School
Our Lady Of Mercy Regional School
Our Lady Of Perpetual Help School
Our Lady Of Providence Regional School
Our Lady Of The Hamptons Regional Catholic School
Our Lady Of Wisdom Regional School
Our Lady Queen Of Apostles Reg Catholic School
Our Redeemer Lutheran School
Our Savior New American School
Oxhead Road School
Oysterponds Elementary School