Glassmanor Elementary School - Home of the Roaring Tigers. Staff, events and school uniform. John Hanson French Immersion/Montessori School - A magnet school that features two unique programs. School information, policies, staff, and PTA. Oxon Hill Middle School - School information, policies, staff, and PTA. Flintstone Elementary School - Profile, staff and supplies. Barnaby Manor Elementary - Staff list, calendar and news. Potomac High School - Find the school mission, administration information, academics, athletics, and departments. Oxon Hill High School - School history, principal's message, academic information, athletics, and policies.