Our Lady Of Mt Carmel Elementary School
Our Lady Of Mt Carmel High School
Our Lady Of Perpetual Help School
Our Lady Of Victory School
Our Lady Star Of The Sea School
Our Savior's School
Outreach Christian Center Academy
Overlea High & Academy Of Finance
Overlook Elementary
Overlook Elementary
Owings Mills Elementary
Owings Mills High
Oxon Hill Elementary
Oxon Hill High
Oxon Hill Middle School